A survey of the opinions of experts    that three hours of outdoor exercise a week    good for one’s health.

---So you are back; are all the students present at the meeting?
---Not really, nobody but Lucy and John ___________ in the meeting room.

Mom used only half of the money, the rest of which ______ saved for other purposes.

Listening attentively in class and reviewing in time _______ a sure way to improve your learning, and this is especially true _______ it comes to standard tests.

---You could have walked here.
---Yes. A taxi ___________ necessary.

It is reported that large amounts of locusts(蝗蟲) _____ in their activity in the north now.

Dr. Green, as well as his wife and children, ______ visit Beijing this winter.

Either you or the headmaster_______ the prizes to these gifted students at the meeting.

I feel it is you rather than the girl who ______ for being late for the speech.

Three-fourths of the buildings ______.