1£®Over the past five years Tom ________ (go) through a lot of hardships.

2£®Take your bank card with you when on a business trip,  ________ can save you a lot of troubles.

3£®Now that I have finished buying, Tom,  ________ his turn£¬should cook.

4£®Last night we had a discussion, which became more and more violent. Finally we reached an agreement that we will never use  ________ (violent) whatever happens.

5£®Sarah made it to the airport just  ________ time to catch her plane this morning.

6£®Reading in the sun is ________ (harm) to your eyes.

7£®The education reform is being carried out in China.It's certain that a completely new situation will arise when the new examination system comes into  ________ (exist)£®

8£®They give birth ________ their young and feed them with their milk.

9£®Tom got up late, thus ________ (miss) the early bus.

10£®When I try to understand what it is that prevents so many children  ________ being happy, there seem to be three causes.