His mother could do nothing but _______ for the doctor to arrive. 
#74188
A
to wait
B
waiting
C
waited
D
wait
推荐题目
The flowers were so lovely that they __________ in no time.
#83634
A
sold
B
had been sold
C
were sold
D
would sel
Who do you think is the right person to ________ the task?
#74727
A
undergo
B
undertake
C
understand
D
underline
I don't think the watch will ______ much. It is ______ $30 at most.
#71045
A
cost, worth 
B
worth, cost 
C
spend, worth
D
worth, spend