_________to see us, theprofessor gave us a warm welcome

It is Ms Chen’s serious attitude________her work and her interesting methods of teaching that make us like her very much.[ ]

If your children ________ a bit, there’d be room for another one on this seat.

He didn’t get a satisfactory result_______, he failed　　[ ]

I’m afraid I you with a great many questions. Thank you a lot, sir.