Task 2. Open the brackets and Put the verbs into Present Perfect Tense ( Раскройте скобки и поставьте глагол в Present Perfect Tense). Example: 1. They ( visit) a lot of museums. 1. They have visited a lot of museums. 2. She ( not watch) this film yet. 3. They ( not be) in America this year. 4. He ( win) two gold medals. 5. I never( go) on safari. 6. We ( be) friends since school.
the robots in our modern world are quite amazing. they can do about almost anything that people can imagine. although not everything. but that is what scientists and inventors are aiming for, that robots can one day fulfill any need that a human may want. although there is also a down side to this, for if that were to happen, then we would become lazybums and only robots would do everything for us. in our modern world though this hasn't come yet fortunately. at the moment things that humans have been doing themselves for ages are being doen by robots. this brings great convenience, for it also improves productivity, for example in factories. with robots working in factories, we can be assured that that factory will have a lot more progress and improvement in speed and development, especially compared to a factory from before which didn't use robots.
2. Whatever you do, you mustn't touch that switch. It`s very dangerous.
3. You mustn't forget what I told you. It`s very important.
4. We don't have to leave yet. We`ve got plenty of time.
5. Ann was feeling ill last night. She had to leave the party early.
6. I had to go to the bank yesterday to get some money.
7. The windows are very dirty. I must clean them.
8. The windows aren`t dirty. You don't have to clean them.
9. We arrived home very late last night. We had to wait half an hour for a taxi.
10. These cakes are very nice. You must have one.
11. We don't have to take an umbrella. It`s not going to rain.