Upon reaching an ________ age, more often than not, children are encouraged, but not forced, “ to leave the nest.”
| A．appropriate | B．adequate | C．automatic | D．accurate |
I think it will be long ______ the influence of Sanlu Milk Powder incident dies down.
| A．that | B．since | C．before | D．after |
A terrible earthquake struck Sichuan Province on May 12, _____ tens of thousands of lives.
| A．claiming | B．claimed | C．causing | D．caused |
--- What’s the matter with Jason. He looks a bit upset.
--- Didn’t you know? When returning from his holiday last night, he found his house________.
| A．broken off | B．broken into | C．broken out | D．broken down |
Oh, it’s so cool in the house. You _______ have turned on the air-conditioner, haven’t you?
| A． should | B．might | C．must | D．can |
Fathers often feel __________ their duty to earn more money for their family.
| A．that | B．it | C．one | D．what |