4.2课时作业
Ⅰ.用所给词的适当形式填空
1．It was ________ (surprise) to see the boy there.
2．The table is covered with ________ (dusty) because it hasn't been cleaned for a long time.
3．Animals of that kind lived on the earth long before humans came into ________ (be)．
4．The animal acts very ________ (fierce). Don't stand close to it.
5．I ________ (intention) to have attended their wedding, but I was too occupied then.
6．His sudden ________ (disappear) was very worrying.
答案：1.surprising 2.dust 3.being 4.fiercely
5．intended 6.disappearance
Ⅱ.选择正确的单词或短语，并用其正确形式填空
1．This kind of bird is ________ in the world.
2．Leave him ________； he's trying to work.
3．Our teachers always ________ combining theory with practice.
4．His father gave him some money to ________ him ________ in business.
5．This ________ of plant will die out, unless we take action to protect.
6．How many factory workers are ________ losing their jobs?
