1. By the time we get home, mother （go） out.

2. The president will willingly answer the questions at the seminar which some clients are supposed to ask when presentation （be） done.

가로 안에 들어있는 걸 알맞은 동사로 바꿔야 하는데 뭔지 도저히 모르겠네요 ㅠㅠ
좀 알려주세요.