| A．should; can’t | B．shouldn’t; should | C．shouldn’t; can’t | D．should; can |
| A．slow; fast | B．fast; slow | C．slow; slow | D．fast; fast |
| A．上网 | B．在家里玩 | C．在外面玩 | D．在里面玩 |
| A．to; sky | B．in; blue | C．up; ladder |
| A．we; wood | B．our; metal | C．us; wool |
| A．make into |
| B．make of |
| C．be made of |
| D．be made into |
| A．to pollute |
| B．pollute |
| C．polluting |
| D．to polluting |
| A．when |
| B．where |
| C．if |
| D．then |
| A．look | B．hear | C．see | D．listen |
| A．luckily | B．lucky | C．luck | D．unlucky |
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