Why do you make me do so? —— I am sorry that you＿＿＿＿＿＿＿＿do such a thing.

________ the prices and functions of different typesof computers before you make up your mind which to buy.

Checking your answers before handing in your paper can help you __________ mistakes.

The old lady’s hand shook frequently. She explained to her doctor _______this shaking had began half a year before, and ______, only because of this, she had to give up her job.

Excuse me, madam. Could you please tell me _________ the bus arrives—Sure. At 9:00.