Actions ______ be taken to stop H7N9 from spreading again.
We’d better put the sofa ________ the TV set so that we can watch TV comfortably in it. [ ]
The survey shows that 200 students do different things during their vacations. ______ of them take classes according to the survey.
Which ocean is ______, the Atlantic or the Pacific?– The pacific.
We’re programmed to want more food, we won’t have a chance to eat tomorrow.