If our product ____ unsatisfactory within 7 days in any way, you can take it back.
| A．shows | B．proves | C．makes | D．performs |
—Are you going to the concert tonight?
—I should have told you that I won’t, ______?
| A．haven’t you | B．shouldn’t you |
| C．are you | D．will you |
“The impact will only growIran’s leaders decide to change course and meet their international obligations,” US Secretary of State Clinton warned．
| A．in case that | B．provided that | C．unless | D．until |
I was standing atop a North Carolina mountain, the afternoon sun______like golden lace through the trees．
| A．threaded | B．threading | C．being threaded | D．was threaded |
Some people claimthe rumor that some Egyptians are planning a 100,000 people anti-government protest．
| A．to overhear | B．to have overheard |
| C．having overheard | D．to be overheard |
In his lecture, the professor referred to the belief, in contrast to all other countries, ______the elderly are wise, ______is particularly dominant in the Chinese culture．
| A．that; one that | B．that; that | C．which, which | D．that; one |