单项选择题
A. any well B. any better C. quite good D. quite better
I()the Summer Palace before, but I decided to visit it ...
单项选择题I()the Summer Palace before, but I decided to visit it a second time.
A. have visited B. visited C. hadn't visited D. had visited
telephone is really () most useful invention, don't you...
单项选择题telephone is really () most useful invention, don't you think so
A. The,/ B. The, a C. A, / D. / the