--- Why does the lake smell terrible?
---Because large quantities of water .
| A．have polluted | B．is being polluted |
| C．have been polluted | D．has been polluted |
一You’ve made great progress in your survey, haven’t you?
——Yes，but some problems among the youngsters still remain——．
| A．settled | B．settling | C．to settle | D．to be settled |
“A Red，Red Rose”，_____romantic poem，is written by Robert Bums，quite a few of whose
works are involved in _______ nature．
| A．a，the | B．the，the | C．a，／ | D．the，／ |
______ different China is from the one _______ it was 60 years ago
A．What a：that B How；that C What a；which D How；which
— Hi．George，can I use your lorry for a while tonight?
一Sorry．______．
| A．It，s repaired | B．It has been repaired |
| C．It，s under repair | D．It’s under being repaired |
Most parents take strong views against computer games which children are——to and
appeal to the closing of all net bars for such games
| A．addicted | B．accustomed | C．available | D．sensitive |