Will you go to Beijing tomorrow —I don’t know. It ________ the weather.

Our office is near the street, so the noise of traffic _____our work seriously. [ ]

He is fluent in English because he once stayed in London。 —Really ?How long ____ there ?

Too much pollution changes people’s life. Our government has done ____ to stop pollution.

________ you have a picnic this weekend，remember to call me.