急！英语习题求解！

Question

1.They fulfilled the plan earlier than they__.
A.have expected B.expected C. were ecpected D.had expected为什么不能选B?而是D？
2.The thief__while climbing over the garden wall. A.has caught B.was caught C.caught D.being caught 答案选B,为什么不能是D?while后是Climbing，while表同时，前后的形式不应该一样么？都是进行时？
3.The committee__nine members. A.composes of B.composes in C.consists of D.consists in 这四个选项的区别是什么？

Answer 1

1D expects预料、预计；expect 先于fufill完成，即过去的过去，用过去完成时。
2 B while还原为while the thief was..因主、从句主语一致，可把从句中主语和BE的形式省略。
3 A 用被动语态 D 在于