нужна Пример:
1) We heard how one of the students in the gym talked to Tim.
We heard one of the students in gym talked to Tim.
2) I did not expect that they would come in time.
3) I watched how he was running by the corridor toward the library.
4) He heard that the bell rang.
5) She believed that he had stolen her money to pay his debts.
6) He wants that this work will be done.
7) The teacher saw how Ann was cheating at the test.