题目内容
Peter ________ be really difficult at times even though he's a nice person in general.
| A．shall | B．should | C．can | D．must |
C
解析
You should study the details of the policy before you sign it.
| A．in return | B．in advance | C．at ease | D．on purpose |
(2013·辽宁五校一模)The little child ________ go out alone at night, so he ________ walk in the dark that night.
| A．doesn't dare to; dared not to | B．daren't to; didn't dare to |
| C．daren't; dared not | D．doesn't dare to; dare not |
(2013·安徽高考)This project requires close teamwork. ________ will be achieved unless we work well together.
| A．Nothing | B．Anything |
| C．Something | D．Everything |
A left－luggage office is a place where bags ________ be left for a short time，especially at a railway station.
| A．should | B．can | C．must | D．will |
Parents________send their children to school when they reach six years old.
| A．could | B．were able to |
| C．ought to | D．would |
All the preparations for the task ________，and we're ready to start.
| A．completed | B．complete |
| C．had been completed | D．have been completed |
Teachers have to constantly update their knowledge in order to maintain their professional ________.
(2011·江苏，27)
| A．consequence | B．independence |
| C．competence | D．intelligence |
(2013·湖北，22)Carbon dioxide, which makes a________between us and the sun, prevents heat from getting out of the atmosphere easily, so the earth is becoming warmer.
| A．difference | B．comparison |
| C．connection | D．barrier |