Tell Mary there is someone __________ for her at the door.
#88256
A
wait
B
to wait
C
waiting
D
waited
推荐题目
 _________, so he is afraid of dogs .
#93517
A
Having been bitten twice
B
Bitten twice
C
After he has been bitten twice
D
He has been bitten twice
Which do you enjoy        your weekend, swimming or fishing?
#90726
A
spending
B
being spent
C
spend
D
to spend