题目内容
完成句子
1.It ______ _______ ________ ________ ________( 有待观察是否) he will give up taking drugs.
2.The Chinese language differs from Western languages ________ ________(原因是), instead of an alphabet, it uses characters which stand for ideas, objects or deeds.
3.I certainly think there should be _____ _______ _______ (禁止) tobacco advertising.
4.While the students found the soldier’s idea interesting, the system was too difficult to _____ _____ _________ ________(实用).
5.Many people were buried alive, and_____ ______ ________ ______(整个城市也被埋没).
6.It’s ______ ________ _________ _______ (被人们认为已经) gradually covered over by sandstorms from AD 200 to AD 400.
7.An explosion happened in the mine, ________ twenty miners ________.(任由……受困)。
8.The desert was once a green land with huge trees, but they were cut down and that ______ ______ ______ _______ ________ ________(导致了这座城市被掩埋) by sand—what a pity!
9.Then, on 24 August, the mountain exploded,______ _____ _____ _____ _____ ______(喷出一团火山灰).
10._______ _______ _____ _______ _______ _______(你方便) to start work tomorrow?