高中英语BOOK7UNIT2的问题：

高中英语BOOK7UNIT2的问题：
1.The weight of ()machine will of course be determined by the sort of ()metal used.
A,the ,the B/; the c./ ; / D.the ,/
2.once harm () to your health ,it takes several months for your physical system to recover
A,does B.is done C.will be done D.will do
3.the speaker seemed to be looking for the words () he could express his concern about public safety.
A,that B where C with which D for which
4.I () ask you to accompany me to the police station for the incidence that happened just now is closely related to you.
A may B should C must Dcan
5.Money worries (),things are going well.
Afirmly B aside C greatly D inside