Traffic is bad, ________ in the city center during the rush hours

Why was Professor Wang unhappy recently—Because the theory he insisted on ________ wrong.

Mr Smith usually reads a newspaper he’s waiting for the bus.

Was ________ problem solved?—We were trying to think of ________ way out, but it was difficult to find one.

I hope you will take the first place in this exam.– I think it’s a great _______ to me because I never did that.