________ 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.

my parents have promised a 2 – day trip this weekend for my good performance．-Cool．You a good time then．

Our neighbor Mr. Smith used to_______ money but he never gave it back.

This library has available _____ you want to borrow for your school

I don’t think_______can answer this question. Some may find it difficult.