—Why, my new computer is rubbish! Five hours has passed and it still hasn’t fini
题型：不详难度：来源：
—Why, my new computer is rubbish! Five hours has passed and it still hasn’t finished the downloading.
—Don’t worry. You know, sometimes the Internet ________ be very slow. |
答案
| A |
解析
| 考察情态动词。Can考察；表示可能性。结合句意可知A正确。句意：—为什么？我的新电脑真是垃圾。四个小时过去了还是没有下载完。—别担心。你知道的，有时候网络也可能很慢。 |
举一反三
—I visited France last year.
—That interesting.| A．was | B．can be | C．must be | D．must have been |
|
The new law states that people _______drive after drinking alcohol.| A．wouldn"t | B．needn"t | C．won"t | D．mustn"t |
|
I __________use a clock to wake me up because at six o"clock each morning the train comes by my house. | A．couldn’t | B．mustn’t | C．shouldn’t | D．needn’t |
|
—Must I return the book tomorrow?
—No, you ________.You can keep it for three days.| A．mustn"t | B．needn"t | C．can"t | D．may not |
|
— I am going to the dentist at 4 o"clock and it is 3：30 now.
— Well, if you ______ leave earlier today, please ask the director for permission. |
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