-You were not in when I came over to your house.
-Oh, I ____________ for a friend from England at the airport.
| A．was waiting | B．had waited | C．am waiting | D．have waited |
It _______ we had stayed together for a couple of weeks _______ I found we had a lot in common.（）
| A． | was until;when | B． | was until;that |
| C． | wasn't until;when | D． | wasn't until;that |
Many of them turned a deaf ear to his advice,they knew it to be valuable.
| A． | as if | B． | now that | C． | even though | D． | so that |
—Look!He’s running so fast!
—Hard to _______ his legs were once broken.
| A．know | B．imagine | C．realize | D．find |
Work gets done _______ when people do it together,and the rewards are higher too.
| A．easily | B．very easy | C．more easily | D．easier |
Why not try your luck downtown,Bob?That’s _______ the best jobs are.
| A．where | B．what | C．when | D．why |