After the explosion, every means __________ prevent the river from __________.
| A．is used to; polluting |
| B．are used to; polluting |
| C．has been used to; being polluted |
| D．are used to; being polluted |
相关试题
Not only ____ 
interested in football but also ____ beginning to show an interest in it.
| A．the teacher himself is ; all his students are |
| B．the teacher himself is ; are all his students |
| C．is the teacher himself; are all his students |
| D．is the teacher himself; all his students are |
The girl is badly injured. You’d better _____ first aid to her before taking her to hospital.
| A．make | B．do | C．take | D．afford |
--It’s a good idea. But who is going to ____ the plan?
---I think Tom and Greg will.
| A．set aside | B．carry out | C．take in | D．get through |
The number of people invited ____ fifty, but a number of them ____ absent for different reasons.
| A．were; was | B．was; was | C．was; were | D．were; were |
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