The more exercise you take, the ____you will be.
| A．weak | B．healthier | C．luckier | D．worse |
I usually sleep with the window open _____ it’s very cold.
| A．until | B．unless | C．when | D．if |
We have to _________our school trip till next week because of the heavy rain.
| A．put off | B．put on | C．put up | D．put down |
The light is on in Mr. Green’s room. He _______ be at home.
| A．must | B．can | C．mustn’t | D．can’t |
A new supermarketin my hometown last month.
| A．built | B．has built | C．was built | D．is building |
—Excuse me. Could you tell me ______________ get to the airport?
—Certainly. Go straight along here.
| A．how can we | B．how we can | C．when can we | D．when we can |