It’s time you changed your attitude ___ your studies, for the time is running out.
| A．with | B．towards | C．for | D．at |
If only I＿＿＿＿＿how to operate a computer as you do!
| A．had known | B．wou欤?know | C．should know | D．knew |
The general ordered that the thief＿＿＿＿.
| A．be punished | B．would punish | C．would be punished | D．should punish |
When a pencil is partly in a glass of water, it looks as if ＿＿＿＿.
| A．breaks | B．has broken | C．were broken | D．had been broken |
He suggests we＿＿＿＿＿＿to the cinema at once, otherwise we will be late.
| A．must go | B．go | C．will go | D．would go |
—— I can’t get through to the general manager’s office anyhow.
—— The line is busy. Someone＿＿＿＿＿the telephone.
| A．must use | B．uses | C．must have been using | D．must be using |