Peter looks sporty.—Yes. He is the ______runner in my class.

Are two students enough to help you carry the desk?— No, the desk is too heavy. I need ______ two.

The fire lasted half an hour before it was ______ by the firemen.

How do you find the concert in the Beijing Grand Theatre last night? —-_______．But the conductor was perfect．

I find __________ very difficult to learn English well .