5. заполните пропуски данными в скобках существительными hundred, thousand, million, billion в единственном числе (с артиклем или без артикля) или во множественном числе.

1 over the past two years, (million) immigrants found work, many illegally.
2 (thousand) of bees have been stolen from a british university.
3 (hundred) years after the constitution was signed, free-enterprise economics had produced doubtful results.
4 state prosecutors investigate more (thousand) cases of stolen babies in spain.
5 according to the estimate, the world population has exceeded the number of (billion) people
6 officials issued public warnings (hundred) of sharks were spotted in the waters.
7 roman abramovich threw a party costing (million) pounds.
8 (million) of people in west africa must be protected from a serious food crisis.
9 it has been found that walking (thousand) steps a day will help you drop undesired pounds.

В задание говорится зачеркнуть неправильные предложения. Задание на знание Past Simple и неправилтных глаголов. Объясню какие варианты правильные, какие нет:

1. fighted - неправильно, пр.вр. глагола to fight - fought. Соответственно правильный второй вариант.

2. Did you catch - правильно,

did you caught - неправильно, вс глагол Did ( пр. вр. гл. to do) и так указывает на время, после него основной глагол применяется в форме настоящего времени.

3. Первое предложение неправильное, т.к. глагол run - в времени будет - ran (3 формы: run, ran, run). На время указывает обстоятельство времени Last week - на неделе.

4. Здесь правильное первое предложение, второе неправильное, т.к время глагола to leave - left (ушел).

5. Первое правильное didn’t tell, второе нет . После did или didn’t используем основной глагол в настоящем времени.

Объяснение:

Like all the best beginnings, this one starts with Pooh, who has woken up with a start in the middle of the night. He has been woken up by a noise, so he gets up just to check on his honey, and all is fine, so he goes back to bed again. But there's the noise again, so Pooh asks the noise if it is Piglet or Christopher Robin or Eeyore, but there is no answer, so Pooh tries to get back to sleep.But there it is again! It's a kind  noise, which doesn't sound like something Piglet or Christopher Robin or Eeyore would say, but Pooh is sleepy so that probably explains his confusion. And now he has heard the noise again he realises that it is not a usual noise, and in fact it is something he has never heard in the forest before, which must mean that there is a Strange Animal outside his house!So Pooh rather bravely gets up and opens his front door so that he can tell the Strange Animal to pipe down please. And the Strange Animal is sitting right there, so Pooh says "Hallo!", and the animal says "Hallo!" back. Pooh is so startled that all he can think of to say is "Hallo!" again, and then the animal says "Hallo!" again too, and then Pooh is still rather stunned, so he says "Hallo!" for a third time, and the animal says "Hallo!" back for a third time, while wondering how long they are going to "Hallo!" for.