I don’t know when he ____. But if he ____, I’ll ring you up.
#41562
A
comes, will come
B
will come, will come
C
comes, comes
D
will come, comes
推荐题目
By the time of last year, she ______ the piano for five years.
#38247
A
learnt
B
has learnt
C
had learnt
D
will learn
When the teacher ______ how to do the experiment, the bell rang.
#37863
A
explains
B
will explain
C
was explaining
D
is explaining
-- __________ you __________ breakfast?    -- Yes, I had it at 6:30. 
#41554
A
Had; had
B
Have; had
C
Are; having
D
Were; having
 —Do John and Betty have a child? —Yes. They _______ for twenty years.
#42622
A
married
B
have married
C
have got married
D
have been married