At the class get-together last night, I could hardly ______ Tom, for he had changed a lot and was no longer what he used to be in high school.

She is_______, so her students are afraid to talk with her .

We believe scientists will ______ a way to solve the problem of air pollution.

I saw a man shouting at a driver ___ car was blocking the street

It’s raining outside. _______ this raincoat, please.