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1. The problem ... by Russian scientists (1. has solved, 2. was solving, 3. has been solved)

2. If it ... raining we will go for a walk (1/stops, 2. will stop, 3. stopped)

3. If I ... free, I"ll go to the party (1. was, 2. have been, 3. am.)

7. I have (lost/been loosing) my note-book. Have you (seen/been seeing) it anywhere? 8. Someone has (eaten/been eating) my sweets. They are nearly all gone. 9. I have (waited/been waiting) for you for ages! Where have you been? 10.

A. Read the sentences and say how can form negations in present perfect I have been to London We have been to Washington You have been to Boston They have been to Chicago She has been to Australia He has been to the USA I have not been to Moscow We

Choose the right tense form. Nina has been learning/has learned English for 2 years. The birds have already flown/have been flying to the South. They have known / have been knowing him for many years.

Прочитайте предложения в видо-временнойформе Present Perfect Continuous, задайте cпециальный вопрос, начиная со слов данных в скобках: Образец: It has been raining since morning. (Since when ... ?) Since when has it been raining? 1.

IW. Choose the right one: Present Perfect or Present Perfect Continuous. 1. We have been / have been having French courses since September. 2. Nigar has read/has been reading some magazines for an hour. 3.