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?
4.China has been following the foregin policy to develop relations with other counteies on the__of the five principles of feaceful co-existence.
A.basis B.base c.account D.foundation
这个题为什么选A?B为什么不对?其他两个选项为什么不对?d不也是基础的意思么?