单项选择题I'm not quite sure how to get there. I'd better()a map.
A. watch B. look up C. consult D. read
单项选择题Carbon dioxide()from burning fuels is the most common of the so-called green-house gases.
A. producing B. having been produced C. to be produced D. produced
单项选择题—Ring me at 5 am. No, better not so early ! I().—I got it.
A. will sleep B. sleep C. am sleeping D. will be sleeping
单项选择题The old man who()in the deserted house alone tbr ten years has been settled in a nursing home now.
A. lived B. had lived C. has lived D. has been living
单项选择题Every camera we sell comes with a two-year()
A. guarantee B. safety C. confirmation D. conservation