질문이 있어요^^
1. The new manual was typed up and ( waiting/ was waited ) when the superviser would return from the bussiness trip.

2.The report suggests that the considerable experiment (should be conducted / is conducted) every three days.

3. The only thing I should do is (collect/ collecting /to collect) some information.

700제에 나와있는 문제인데,잘 모르어요. ^^ 아시는 분 답변부탁드립니다.