Professor Black has us___a composition every Friday.

The directors have a meeting every Friday，__________there is nothing to discuss．A.if###SXB

Professor James suggested that his students ______ a composition about air pollution.A．wri

The professor asked us to write a _____________ report.A、two－hundreds－wordsB、two－hundre

_______ of the students has two books.A、AllB、BothC、EachD、Every

Professor Smith and Professor Michael______in giving us lectures.A．alteredB．alternatedC．ch

I dont know why Mrs. Black keeps interfering, it has______her.A．something to do withB．no b