[单选题]I phoned them last night but no one answered. They _________ (be) out.
北开题库
|
2023-10-01 08:01:02
|
15
[单选题]I phoned them last night but no one answered. They _________ (be) out.

A.must have been
B.can't have seen
C.couldn't have
D.will have been
查看答案

国家开放大学

形成性考核

您可能感兴趣的试题
TOP