It is necessary that something urgent ______ to combat smuggling.
A: is done
B: be done
C: has to be done
D: must be done
A: is done
B: be done
C: has to be done
D: must be done
举一反三
- Only recently_________ to deal with the environmental problems. A: something has done B: has something done C: has something been done D: something has been done
- Only in the past few years _______ to improve the living conditions in this area. A: something has been done B: there is something done C: has there something been done D: has something been done
- It’s high time _____ about the traffic problem. A: anything will be done B: something was done C: nothing be done D: something is done
- My suggestion is that the experiment ______ in another way. A: is done B: will be done C: has been done D: be done
- It’s high time ______ about the traffic problem． A: something was done B: everything is done C: anything will be done D: nothing to be done