Пожалуйста помогите с заданием, срочно

раскройте скобки и поставте глагол в правильную форму:

present continuous
1. don't go to nick's place, he (to work);
2. he usually (to play) in the yard at this time, but now he (not/ to be) there;
3. he (to read) a book at five o'clock yesterday;
4. i (not/ yet/ to write) an english exercise;
5. you (to come) to our place tomorrow?

past perfect
1. what nick (to do) when you (to ring) him up yesterday?;
2. you ever (to be) to the hermitage?;
3. he (to play) the piano the whole evening yesterday;
4. why she (to sleep) now? it (to be) too early. she never (to sleep) at this time;
5. you (to go) to the library tomorrow?

present simple
1. look! jane (to swim) across the river;
2. what nick (to do) when you (to ring) him up yesterday?;
3. you (to be) at college yesterday?
4. i (not/ to go) for a walk, i (not/ yet/ to do) my homework;
5. he (to cook) the dinner, before his wife (to come) home from work.