6．what she was doing

5．figure out

4．It’s required

3．were about to

2．nor will sustainable development be possible

1．are not supposed to

10．It was ____________(直到才) 12 o’clock last night that I went to bed.(until)

[答案]

9．Janet ____________(收集了大量的) foreign coins; she loves showing them off to every visitor.(collection)

8．Helen had to shout ____________(使别人听见她的话) above the sound of the music. (herself)

7．When first ____________(引进) to the market, these products enjoyed great success. (introduce)