We don’t allow ____ in the office. But you are allowed ______ in the open air. 
#96186
A
smoking; smoking
B
to smoke; to smoke
C
smoking; to smoke
D
smoke; smoking
推荐题目
Noticing some passers-by gathering on the road, Jill looked forward _______ what was the matter.
#96138
A
to find out
B
to finding out
C
only to find out
D
finding out
With fewer and fewer farmers _______ chickens, the price of eggs in the market ________.
#97285
A
rising; rises
B
raising; raises
C
rising; raises
D
raising; rises
We may learn ___ English well by ___ it.
#97835
A
speaking, spoken
B
spoken, speaking
C
spoken, spoken
D
speaking, speaking