Test 1 is still working Have you ever had wants ’ve been trying don’t understand 2

TEST 3
1
1 ought to 2 should 3 shouldn’t 4 ought to
5 shouldn’t
2 Suggested answers
1 You should see a dentist. 2 You should behave better.
3 You ought to start a business. 4 You should pretend to
be ill. 5 You ought to practise more.
3
1 Can we have 2 don’t have to pay. 3 can’t drive in this park.
4 I have to finish this project? 5 should/ought to/had better 
ask for permission.
4
1 Students mustn’t wear trainers.
2 She ought to find another job.
3 We had better not be home too late.
4 You shouldn’t worry about the future.
5 Can I come with you?
5
1 don’t have to 2 should 3 can’t 4 had better 5 mustn’t
6
1 I really must remember to buy a pen.
2 Do I have to help you clean up?
3 You mustn’t forget your exam is tomorrow.
4 We had better not tell Dad about this! 
5 John ought to take up a new hobby.
TEST 4
1
1 wouldn’t 2 is 3 stole 4 ’ll 5 needed
2
1 f 2 a 3 d 4 b 5 e
© Cambridge University Press 2016
Think
Level 3 Extension Test Key
THINK Level 3
EXTENSION TEST KEY

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3
1 If I tell you, will you promise to keep it a secret?
2 If only I could speak German.
3 I wish you wouldn’t talk so much.
4 If you had got up earlier, you would have seen a beautiful 
sunrise.
5 What would you have done if there had been nobody to
help you?
4
1 would have worn a raincoat if she’d known it was going to rain.
2 wouldn’t have failed the test if he had studied.
3 had invited me, I would have come.
4 hadn’t been lovely, we wouldn’t have gone for a bike ride.
5 had been tired, I would have gone to bed.
5 Suggested answers
1 I had failed the test. 2 I would have built a snowman. 
3 you had fallen off your bike. 4 I studied more. 
5 I’d be tired now.