—Who helped Betty tidy up the bedroom just now?—________. She cleaned it all by herself.
—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.
The old man lived ______ in a small house, but he didn’t feel ______.
I ______ my mum cook dinner in the kitchen when the telephone ________.