--- We don’t allow _________ in the library .
--- So we had better _________ outside .
| A．smoking , smoking | B．to smoke , smoking |
| C．to smoke , to smoke | D．smoking , smoke |
Many students will be ________ if the class is boring.
A.sleep B.sleepy C.sleeping
Students should pay attention to ________ the teacher in class.
A.listening to
B.listen to
C.hearing of
When I have problems I often ask my teacher ___ .
A. to helping
B. help
C. for help
You can’t expect ________ a foreign language well in several months.
A. to learn B. learning C. learnt
Alice prefers ________ to ________.
A. dancing, singing
B. dancing, sing
C. sing, dancing