The firemen in Tianjin explosion scene devoted their lives ____ the spread of pollution.
| A．to preventing | B．to prevent |
| C．for stopping | D．to stop |
—How do you study____ a test?
--I study____working_______my classmates.
| A．for , in , with | B．for, by, at | C．for, by, with | D．of, in, by |
—Tom isn’t feeling very well.
—He seems to have a cold the weather changes suddenly.
| A．before | B．so | C．because | D．if |
—What’s your best friend like? —.
| A．He’s fine. Thank you | B．He is a doctor |
| C．He likes watching TV | D．He is helpful and generous |
The number of the students in our school always growing.
| A．be | B．are | C．is | D．were |
—The terrible rainstorm hit the small villages and .
—How unlucky the villagers were!
| A．washes them away | B．washed them away |
| C．washes away them | D．washed away them |