---Listen! Who ______ in the next room? ---I think Sam is.
#41778
A
sing
B
sings
C
singing
D
is singing
推荐题目
 — Have you got any chocolate? —__________.
#37982
A
Yes, we haven’t.
B
No, we haven’t.
C
Yes, have.
D
No, have not.
___How time flies!It’s already twelve o’clock. ___ Oh,really? I ______ it at all.
#41598
A
don’t realize
B
Didn’t realize
C
haven’t realized
D
hadn’t realized