—Will you stay for lunch?
—Sorry, ____________. My brother is coming to see me.
| A． I mustn’t | B．I can’t | C．I needn’t | D．I won’t |
— I have got a headache.
— No wonder. You___________in front of that computer too long.
| A．work | B．are working | C．have been working | D．worked |
The expert insisted that silkworms were first raised by a woman in___________is now Hebei Province.
| A．which | B．that | C．where | D．what |
My grandfather is as ___________as a young man and hates sitting around doing nothing all day.
| A．enthusiastic | B．energetic | C．talkative | D．sensitive |
— I am afraid the task is too difficult for me, sir.
—___________, Linda. Just believe in yourself!
| A．No problem | B．That's all right | C．That's OK | D．Come on |
— John, where are the cookies? Don't tell me you ate them all.
—___________. I couldn't help it. They were so good.
| A．Yes, I did | B．No, I didn't | C．Yes, I have | D．Why? Sound strange |