выбрать правильные Are these sentences right or wrong?

1. An operator can know how to use the telephone system. An operator may know how to use the telephone system. An operator should know how to use the telephone system.
2. I suggest we should buy a mobile telephone to stay in touch. I suggest we bought a mobile telephone to stay in touch. I suggest to buy a mobile telephone to stay in touch.
3. If Tom called leave me a message. Should Tom called leave me a message. Must Tom called leave me a message.
4. You should deal with the calls promptly in the morning but I see that they are not answered. You should have dealt with the calls promptly in the morning but I see that they are not answered. You should be dealing with the calls promptly in the morning but I see that they are not answered.

Japan earthquake and tsunami of 2011, also called Great Sendai Earthquake or Great Tōhoku Earthquake, severe natural disaster that occurred in northeastern Japan on March 11, 2011. The event began with a powerful earthquake off the northeastern coast of Honshu, Japan’s main island, which caused widespread damage on land and initiated a series of large tsunami waves that devastated many coastal areas of the country, most notably in the Tōhoku region (northeastern Honshu). The tsunami also instigated a major nuclear accidentat a power station along the coast.

The magnitude-9.0 earthquake struck at 2:46 PM. (The early estimate of magnitude 8.9 was later revised upward.) The epicentre was located some 80 miles (130 km) east of the city of Sendai, Miyagi prefecture, and the focus occurred at a depth of 18.6 miles (about 30 km) below the floor of the western Pacific Ocean. The earthquake was caused by the rupture of a stretch of the subduction zone associated with the Japan Trench, which separates the Eurasian Plate from the subducting Pacific Plate. 

A wave measuring some 33 feet high inundated the coast and flooded parts of the city of Sendai, including its airport and the surrounding countryside. According to some reports, one wave penetrated some 6 miles (10 km) inland after causing the Natori River, which separates Sendai from the city of Natori to the south, to overflow. 

The earthquake triggered tsunami warnings throughout the Pacific basin. The tsunami raced outward from the epicentre at speeds that approached about 500 miles (800 km) per hour. It generated waves 11 to 12 feet (3.3 to 3.6 metres) high along The earthquake triggered tsunami warnings throughout the Pacific basin. The tsunami raced outward from the epicentre at speeds that approached about 500 miles (800 km) per hour. It generated waves 11 to 12 feet (3.3 to 3.6 metres) high along 

Объяснение:

это с инета Нооо это похоже на эссе И я сама прочитала и выбрала подходящий

1. Her phone has been ringing for ten minutes. I wonder why she doesn't answer

2. Have you seen my bag anywhere? I have been looking for it for ages.

3. He has been studying Russian for two years and doesn't even know the alphabet yet.

4. How long have you been waiting for me? - I have been waiting about half an hour.

5. It has been raining for two days now. There'll be a flood soon.

6. We have been arguing about this for two hours now. Perhaps we should stop!

7. You have been driving all day. Let me drive now.

8. How long have you been smoking cigarettes?

9. It has been snowing for three days now. The roads will be blocked if it doesn’t stop soon.

10. Ann has been looking for a job for 6 months.