Question

英语题，要解释和答案

1.Amy did best in the English test.She ( ) hard last week
A.must have working B.should heve worked C.should work D.must work

2.The fire spread through the hotel very quickly but everyone ( ) get out
A.had to B.would C.could D.was able to

Answer 1

1.Amy did best in the English test.She (B ) hard last week
A.must have working B.should heve worked C.should work D.must work
这里should have done表示由之上事实推测，A选项语法错误。

2.The fire spread through the hotel very quickly but everyone (D ) get out
A.had to B.would C.could D.was able to
指过去某时或某个时刻设法做成某事，不用could,而用was\were able to,managed to do或succeeded in doing等.

Answer 2

1. must have worked 才对， 表示对过去的猜测

2。 D
表示经过努力做成的事情，could 表示一般的会