It’s important _______ the piano well.A. of him to play B. of him playing C. for him to play
The floor is so wet. Let’s _______.
The flood in 1998 washed lots of houses _______ and lots of people _______.
—I’d like to take five days off, Mr. Smith. —______ . Don’t you know we’re very busy these days?
—We only live once, but if we live a wonderful life, once is enough. — ________ I agree.
As we all know, great changes _______ in China in the past thirty years.