Trees can prevent the wind _____ the earth away.
| A．from blowing | B．to blow | C．blow | D．blows |
— What a mess! Daniel, would you please your school things?
— Sure, mum.
| A．put up | B．put on | C．put out | D．put away |
It is usually warm in Nanjing in spring. But sometimes it be very cold.
| A．must | B．would | C．can | D．should |
—The light in his office is still on. Do you know ?
—In order to prepare for tomorrow’s meeting.
| A．if he works hard | B．why he stays up so late |
| C．that he is so busy | D．when he will stop working |
—Simon, you look worried. What’s wrong with you?
—Well, I a test and I’m waiting for the result.
| A．will take | B．took | C．take | D．am taking |
—How big the Green Expo Garden is!
—It is. You will get los t easily you have a map or a guide.
| A．unless | B．until | C．if | D．because |