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
His first book ________ next month is based on a true story.
#88711
A
published
B
to be published
C
to publish
D
being published
After the professor____out the project made a comment on the report, the media focused on it.
#95796
A
was opposed to carry
B
opposed to carry
C
opposed to carrying
D
opposed carrying
. The library’s study room is full of students _______ for the exam.
#95939
A
usily prepared  
B
usy preparing  
C
usily prepare  
D
re busily preparing