Question

两道英语选择题，求大神帮助 明天要讲。。

——Do you know where David is? I couldn`t find him any-where.
——Well.He __ have gone far-his coat`s still here.
A. shouldn`t B.mustn`t C.can`t D.wouldn`t

Measures have been taken ___ the spread of the HIV.
A.arresting B.arrested C.to arrest D.for arresting

Answer 1

his coat`s still here说明“肯定还没走远”，是较为肯定的“否定推测”，所以答案应该是C项。
第二个题应该选择C，很明显句子中主谓宾都有了，所要选的根据句意应该是目的状语，所以选择C项。

Answer 2

第一题选D
第二题选C

Answer 3

1.C can‘t have done...表示较肯定的推测
2.C 考察“take measures to do sth.”

Answer 4

c,情态动词用法，这里表示肯定没走远
c，take measures to do sth,固定用法

Answer 5

应该是B和C