—I’m going to the United States.   —How long ______ you ______ in the United States?
#102495
A
are; stayed
B
are; staying
C
have; stayed
D
did; stay
推荐题目
 If it ______ too much trouble, I’d love a cup of coffee.
#100187
A
isn’t
B
wasn’t
C
weren’t
D
hadn’t been
With the gas _____, they had to quit the car and walked.
#103339
A
has run out
B
running out
C
ran out
D
be run out
 I ______ this book for two weeks. I have to return it now.
#101638
A
have borrowed
B
have kept
C
have lent
D
have returned