The decorations were so lovely that they _____ in a short time.
| A．sold out | B．has been sold out | C．were sold out | D．were selling out |
【2015·江苏】It is so cold that you can’t go outside _____ fully covered in thick clothes.
| A．if | B．unless | C．once | D．when |
【2015·福建】_________the students came from different countries, they got along quite well in the summer camp.
| A．While | B．Unless | C．Since | D．Until |
【2015·陕西】I believe you will have a wonderful time here ________you get to know everyone else.
| A．though | B．as if | C．once | D．so that |
【2015·四川】There is only one more day to go ______ your favorite music group play live.
| A．since | B．until | C．when | D．before |
【2015·天津】We need to get to the root of the problem______ we can solve it.
| A．while | B．after | C．before | D．as |