This is the only one of the books on space ___.
A.that has been written | B.that have been written | C.which have been written | D.which has been written |
—Where did you get The Frog written by Mo Yan?
—I picked it up from a bookshop online if you ________ know.
A.must | B.will |
C.can | D.shall |
When I lived with my roommates in the university, we ________ often talk into the night.
A.might | B.could |
C.should | D.would |
________ your letter, I would have set off two days ago.
A.If I could have received |
B.Should I receive |
C.If I received |
D.Had I received |
You ________ in person; a telephone would have been enough.
A.couldn't have come | B.needn't have come |
C.shouldn't have come | D.mustn't have come |
I felt surprised that anyone of his intelligence ________ such an easy test.
A.might have failed | B.could have failed |
C.should have failed | D.must have failed |