—Oh, I've just locked my keys in my office again.
—You're always so careless, but ________ let's see what we can do about it.
| A．otherwise | B．therefore |
| C．anyway | D．besides |
They said good-bye, little knowing that they _______ again.
| A．were never met | B．will never meet |
| C．never met | D．were never to meet |
Look at the timetable.Hurry up! Flight 4026 _______ off at 18:20.
| A．takes | B．took |
| C．will be taken | D．has taken |
My mind wasn’t on what he was saying so I’m afraid I _______ half of it.
| A．was missing | B．had missed |
| C．will miss | D．missed |
The first use of atomic weapons was in 1945.And their power _______ increased enormously ever since.
| A．is | B．was |
| C．has been | D．had been |
They _______ on the program for almost one week before I joined them,and now we _______ it as no good results have come out so far.
| A．had been working; are still working |
| B．had worked; were still working |
| C．have been working; have worked |
| D．have worked; are still working |