—Is there any possible way to help them get rid of such a bad habit?
—To tell the truth, it’s very hard. But we ________ on this problem, trying to improve the situation .
| A．worked | B．had worked | C．are working | D．had been working |
相关试题
—Sorry for being late for the party.
—earlier next time, will you?
| A．Coming | B．To come | C．Having come | D．Come |
—How delicious the noodles are!
—Yes. It would taste with tomatoes.
| A．better; many | B．best; many | C．better; more | D．best; more |
Buying clothes a hard job because the clothes a person likes not very often fit him or her.
| A．are: do | B．is; does | C．are; does | D．is; do |
—Daddy，will you come home for supper with US today?
—, but I might be a little late.
| A．I'm busy | B．No problem | C．I'm sorry | D．It's hard to say |
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