My goodness, look at the time! It’s nine o’clock already and I’m __________ at breakfast.

Professor Lee failed many times but he ________found a good way to solve the problem.

You are driving too fast. Can you drive_________?

It was ________ impossible for her to catch the 9 o’clock train. I know she got up at 9:15．

—Mom，dad is smoking again!—Well，let him cut it ________ gradually since old habits die hard.