The design ________ all the ages and social groups is not easy to make.
| A．appealed to | B．being appealed to | C．to be appealed to | D．appealing to |
Some people believe that they would be better offmore adaptive activities in their leisure time, such as establishing relationships and teaching their children．
| A．doing | B．to do | C．having done | D．to be doing |
—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 |