15.Our head teacher

we don't know yet who will be our new head.
A.would leave at the end of term
B. is leaving at the end of term

C. should leaving at the end of the term D. will leave at the end of the term

The answer is D. will leave at the end of the term. This indicates that it is certain that the head teacher will leave at the end of the term.

16. We need a beaker of water

the experiment.

A. so that

B. to

C. in order to

D. for

17. Yes I'm going to be a tour guide! It's fantastic! I'm really
about it.

A. excites

B. exciting

C. excited

D. excision

The answer for 16 is C. in order to. This indicates the purpose or reason for needing the beaker of water.

The answer for 17 is C. excited. It is the correct adjective form to describe the feeling of being a tour guide.

18. I wish it

raining so we could go to the match.
B. has been not

A. isn't

C. weren't

D. can be not

The answer is C. weren't. This expresses a hypothetical or unreal situation, indicating that it is not currently raining.

19We a lot of honey. The bees are very active this year.

A. are unlikely have B. are sure to have

C. probably wont have

D. perhaps it won't have

The answer is B. are sure to have. This indicates a high likelihood of having a lot of honey because the bees are very active.