1.When his mother entered the room, he ______ to be reading.(假装)
2.On teachers' Day, large quantities of ________kept pouring in. (明信片)
3.The dark clouds are gathering. It is _________hard.(刮)
4.You'd better not have these _______running all the time. (拖拉机)
5. I've only two ______ left in my hand. (钻石)
6.The teacher prepared various reading ______(材料) for practising reading.
7. May 4th ______ took place in 1919.(运动)
8. My little brother is much ______ than me. (淘气)
9. An idea suddenly ______me that he might have an accident.(想起)
10. Introductions are ______ since you all know each other. (没必要)