In the past, ice used to ______ used to ______ the air in a room.
| A．be ;cooling | B．be; cool | C．being; cool | D．being; cooling |
______ application of transgenic (转基因) technology should be restricted on all food production and the government should take ______ “scientific attitude” toward food, Yuan Longping said.
| A．The ; a | B．An; the | C．The; the | D．An; a |
—Do you think you will be able to finish your writing by five o’clock today?
—______. I’ll be busy with experiments all day.
| A．Not a chance | B．Not a little | C．Not to mention it | D．Not a big deal |
I’m sorry, but I didn’t mean to keep you waiting here for a long time. Can you ______ me?
| A．forgive | B．satisfy | C．apologize | D．remind |
—Do you mind if I open the window?
— I feel a bit cold
| A．Of course not. | B．I'd rather you didn’t. | C．Go ahead. | D．Why not |
I was really anxious about you. You____ home without a word.
| A．mustn’t leave | B．shouldn’t have left | C．couldn’t have left | D．needn’t leave |