The teacher said the earth _______ round the sun.
A. goes B. went C. Go
The train has gone ___________ the tunnel. We can’t see it.
| A．across | B．through |
| C．crossing | D．over |
—The light is still on in his room. Do you know ___________ ?
—Maybe he has to study for a test.
| A．if he works hard |
| B．who he is studying with |
| C．what he is busy with |
| D．when he will stop working |
—What do you think of Mary’s dress?
—I think it still looks quite fashionable on her _______ it is a style of many years ago.
| A．though | B．unless | C．until | D．because |
— It’s cloudy now. I hope the clouds will _______ later on. — I hope so.
| A．clear | B．be heavy |
| C．appear | D．clean |
—He ______ be in the classroom, I think.
—No, he ______ be in the classroom. I saw him go home a minute ago.
| A．can; might not | B．must; might not |
| C．might; can’t | D．might; mustn’t |