1. She is (a) likely to do it.
Be likely/unlikely to is used to talk about how probable things are.
2. He is (c) unlikely to pass the exam.
Be likely/unlikely to is used to talk about how probable things are.
Единственная корректная форма использования.
3. (c) я считаю, что она хорошая подруга
фраза believe someone (to be) something (считать, верить) в контексте предложения - в настоящем времени
4. (c) - knock
Исходя из контекста предложения, единственный верный вариант.
5 ..three stages: (c) primary, secondary, and further education.
Фактическое название уровня образования в Британии.
6. (d) Russia
Россия - единственная страна из списка, которая граничит с Китаем :)
7. The (c) population of Russia is over 150 million people.
Population (население) - единственное слово, которое подходит к описанию людей в миллионах.
8. 2 women were sitting at the table (a) speaking about their children.
doing something - speaking (с окончанием -ing)
9. We watched the birds (d) fly in the sky.
Verbs following the verb "to watch" can in the base form ("fly") or the -ing form ("flying"). The same is true for other verbs of perception (hear, feel, taste etc)/
10. There is no point in (a) going there today.
предложение основано на идиоме: there's no point in (doing something)
2 We haven't seen her for ages.
3 Grandparents have already visited their grandchildren.
4 Now they are sitting in the living room and talking about their trip.
5 Have you ever been to Africa?
6 He has done everything for her. Now he is going to buy her a house.
7 The concert has not started yet, and we are sitting in the hall and discussing our problems.
8 Wait for me! I haven't taken money yet.
9 I have just had breakfast.
10 He has already had breakfast.