1. But _______ the money transfer isn't successful?

a) unless

b) even if

c) in case

d) what if

2. We can give you a refund for the jeans _______ you provide the receipt.

a) supposed

b) on the condition that

c) unless

d) in case

3. The PC will be safe from malware attacks _______ good anti-virus software has been installed.

a) provided that

b) unless

c) in case

d) should

4. _______ they offered you the job, would you take it?

a) But for

b) In case

c) Suppose

d) Should

5. _______ they deliver the sofa on Tuesday, there'll be no one home to receive it.

a) In case

b) Providing that

c) But for

d) Even if

6. They would have caught a serious virus, _______ the vaccination they had had before they left.

a) but for

b) providing that

c) on the condition that

d) so long as

7. The city mayor said she didn't mind street art in the city _______ it wasn't offensive.

a) unless

b) whether

c) in case

d) so long as

8. There were ambulances on standby _______ the students fell sick at the exam hall.

a) unless 

b) so long as

c) in case 

d) but for 

答案

1) d, 2) b, 3) a, 4) c, 5) d, 6) a, 7) d, 8) c.