We’ll ____ three groups to carry out the experiment in chemistry．
| A．be separated from | B．be divided into |
| C．be divided from | D．be separated off |
I lost your address, otherwise I＿＿＿＿you long before.
| A．had visited | B．have visited | C．would have visited | D．should visit |
Very loud noise＿＿＿＿＿make people ill or drive them mad.
| A．should | B．can | C．need | D．must |
＿＿＿＿＿he come, the problem would be settled.
| A．Would | B．Should | C．Shall | D．If |
Without your help, I ＿＿＿＿the exam last term.
| A．failed in | B．would have failed | C．wouldn’t pass | D．would fail |
The young man insisted that he＿＿＿＿＿nothing wrong and＿＿＿free.
| A．did； set | B．had done； should be set |
| C．do； be set | D．had done； must be set |