1£®It is uncertain whether he'll succeed in passing the driving test or not.

2£®His decision made it possible for us to finish the work by four o'clock this afternoon.

3£®Each of us in turn had to describe how alcohol had affected our lives.

4£®The situation in that country should be prevented from becoming (become) worse.

5£®You needn't worry because this snake is harmless (harm)£®

6£®My relationship with the actors is fundamental to my work as a director.

7£®If you give up this chance, you'll regret it in time.

8£®Look at the pictures and take turns to tell (tell) the story.

9£®I was unaware of his existence (exist) until today.

10£®We can't deal with it with violence (violent)£®