_______ one and a half months enough for the project to be finished?—I am afraid not. The professor is ill and only after he recovers ________ go on with it.

500,000dollars ____ a lot of money, but it’s far less than they need.

It’s time to say goodbye to my school . I’ll always remember the people ____ have helped me .

John likes walking in the open air. _____. [ ]

Li Ming had fun ______ his class records.[ ]