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My grandfather doesn't know               to use a computer.
#59736
A
what
B
who
C
how
D
which
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It’s too late. __________ go home?
#60213
A
Why not
B
Why don’t
C
Would you like
D
What about
The Greens seldom go to the concert,________?
#65467
A
don’t they
B
do they
C
don’t he
D
do he
—______ do you spell “classroom”?—I’m sorry I don’t know.
#60156
A
What
B
When
C
How
D
Where
Must I return the book this week?  No, you______. You can ______ it for 20 days.
#60199
A
mustn’t, keep
B
needn’t, borrow
C
needn’t, keep
D
mustn’t, borrow
We had hoped that you would be able to visit us, but you    .
#64660
A
didn’t
B
hadn’t
C
wouldn’t
D
would not have