王迈迈英语

   B set   C one   D pair

50. Many new _A_ will be opened up in the future for those with a university education.

A opportunities   B necessities   C realities   D probabilities

51. He must have had an accident, or he _A_ then.

A would have been here   B had to be here   C should be here   D would be here

must have + 过去分词 表示对过去行为的肯定推测；

与过去事态相反用：情态动词 + have + 过去分词 来体现虚拟语气；

must 一定，必须； needn't, don't have to 不必；

53. You _A_ all those calculations! We have a computer to do that sort of thing.

A needn’t have done   B must not have done

C shouldn’t have done   D can not have done

should have + 过去分词 本应该，本应当； shouldn't have done本不应该，本不应当；

44. It was very kind of you to do the washing-up, but you _D_ it.

A mustn’t have done   B wouldn’t have done

C mightn’t have done   D didn’t have to do

52. It was essential that the applications forms _C_ back before the deadline.

A must be sent   B would be sent   C be sent   D were sent

It be essential that 后面一定用虚拟语气，且句子谓语动词固定为(should) + 动词原型；

It was essential that the applications forms send back before the deadline.

53. We _D_ our breakfast when an old man came to the door.

A just have had   B have just had   C just had   D had just had

when 还可以表示①刚..就… （有动作先后关系）、②恰在此时；

44. I had just started back for the house to change my clothes _D_ I heard voices.

A as   B while   C after   D when

45. I felt somewhat disappointed and was about to leave, _C_ something occurred which attracted my attention.

A unless   B until   C when   D while

64. It was essential that these application forms _D_ back as early as possible.

A must be sent   B will be sent   C are sent   D be sent