IV. Put the correct form of the verbs in brackets (1 point)
1. He (buy) ________________ a car two months ago.
2. She (fly) ________________ to Ho Chi Minh City many times but last year she went there by train.
3. He (collect) _________________ stamps next year.
4. They (clean) _________________ the beach now.
1 bought
2 had flown
3 will collect
4 are cleaning