Поставьте глагол в нужную форму во все времена группы Simple Tenses,Progressive Tenses,Perfect Tenses(здесь есть предложения в которых глагол можно поставить только в одно время,но есть одно предложение в котором глагол можно поставить в три времени,также есть 2 предложения в которых глагол можно поставить в два времени)

1. I (to begin) my research on this subject two months ago.
2. Next time our Institute (to celebrate) its centenary.
3. I just (to speak) to the Dean about our tutorials and plans for the vacation.
4. Where is your friend now? He (to enjoy) his holidays somewhere.
5. She (to collect) a lot of books on Law necessary for her work. (3 варианта)
6. The first year students usually (to take) part in amateur activities. (2 варианта)
7. We (to read) about the capital of our country and its history by April.(2 варианта)

Спасибо огромное!!!!!!! очень выручила!

Я он)))

1 began 2 will celebrate3 I have just spoken4 is enjoying5. She is collecting a lot of books on Law necessary for her work. She has collected a lot of books on Law necessary for her work.She will collect a lot of books on Law necessary for her work. 6. The first year students usually take part in amateur activities. The first year students usually took part in amateur activities. 7. We had read about the capital of our country and its history by April. We will have read about the capital of our country and its history by April