My brother tried ___, but still he couldn't work out this maths problem.
—Call me at 9:00. I can’t afford to miss such an important meeting. —Don’t worry, sir. You will surely be __________.
We don’t have to keep these old chairs any more. ________, they are falling apart(支离破碎).
—I’m surprised to hear that Sue and Paul have ________. —So am I. They seemed very happy when I last saw them.
Nowadays school bus safety has drawn much attention nationwide for children’s safety is _______ worries parents most.
—What is the price of gas these days? —Oh, it ____________ sharply since last month.