The old radio requires____________, so you’d better have it ______soon.
| A．to repair, repaired | B．repairing, repaired | C． repaired, repair | D． to repairing, repair |
—Excuse me， ____ is the post office?
—About 500 meters away.
| A．how often | B．how long | C．how far | D．how soon |
—Where ____ you ____ lunch?
—At home．There was no school lunch
| A．did；have | B．are；having | C．will；have | D．do；have |
I’m not sure about the meaning of the word. You’d better look it up in a ____ ．
| A．letter | B．dictionary | C．postcard | D．notice |
Trees ____ fight air pollution．They are natural air conditioners．
| A．should | B．must | C．need | D．can |
____ it snowed heavily yesterday, nobody in our class missed the lesson．
| A．Though | B．Because | C．Unless | D．Since |