In spring, it is good for you to sleep ________your windows open.
| A．for | B．to | C．with | D．about |
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 |
Friends are those__________ make you smile，always open their hearts to you and encourage you to succeed
| A．which | B．what | C．whom | D．who |