The film for half an hour.
A.has begun | B.has been on | C.hasn’t begun | D.began |
The World Health Organization has given some advice on________to protect us from being infected(感染)with H7N9.
A.how |
B.what |
C.where |
D.when |
—What do you usually help your mother________?
—I often do the dishes.
A.to doing |
B.to do |
C.doing |
D.does |
It took him one hour________his homework.
A.do | B.to do | C.doing | D.to doing |
The weather is too dry.Those trees need________.
A.watering | B.to watering |
C.to water | D.watered |
They had trouble________complete sentences.
A.to make up | B.make up |
C.to making up | D.making up |