．—Steve come back because the window is open．
—Yes．but he _______left it open last night．
| A．must have；might have | B．might have；can’t have |
| C．can have；should have | D．might；must have |
In many states of America, a neighbor may ______ you with playing your radio too loudly.
| A．charge | B．blame | C．punish | D．scold |
When we get knocked down, we get back up and we come back stronger, and, ____ I’m President, that’s what we’ll keep doing.
| A．even though | B．as if | C．now that | D．as long as |
______ he referred to in his article was often discussed by many people.
| A．That | B．What | C．Whether | D．Where |
She will tell us why she feels so strongly that each of us has a role _____ in making the earth a better place to live.
| A．to have played | B．played | C．playing | D．to play |
The Russian rocket designer has died. For many years, he ______ as an important assistant to the father of Soviet space program.
| A．serves | B．was serving | C．served | D．has served |