2 . All he could do was nothing but __________(wait)and see . (所给词的适当形式填空)

3 . 选词填空

wear out;     tend;     at first sight;     come to one’s rescue;     break up; lay out;   belong to;   upwards of;       typical of;        have a go

1. Calaf falls in love with Turandot_______________.
2. There is a____________to think of each of the arts as a separate area of activity.
3. Even though.the Beatles_____________in 1970, no group has ever come close to being as popular or selling as many records.
4. My son asked me to let him_______________at fixing the computer.
5. They were_________________after a long day spent working in the fields.
6. After the miners were trapped underground, the firemen soon______________________.
7. A computer of the model costs______________6,000 yuan..
8. _____________Chinese, he is kind, hard-working and determined.
9. I don’t know where these plants_________________different species come from.
10. Before the dinner party, my daughter helped me______the knives and the folks on the table .

4 . While watching television, ________.

A．the doorbell rang	B．the doorbell rings
C．we heard the doorbell ring	D．we heard the doorbell rings