Раскрыть скобки, используя правило согласования времен

1) She thought that we (to wait) for her then.
2) The director hoped the film (to be) a success.
3) I explain to you that they (to join) us tomorrow.
4) They wrote that they (not to like) our new ideas.
5) He said that he already (to send) a telegram.

в ответах на этот вопрос возможны варианты

1. we would wait...2. film would be...3. they will join... 4. they hadn't liked... 5. he had already sent...