科目: 来源:不详 题型:单选题
At the meeting the boss was explaining his plan while his secretary_________ the notes.| A.is taking | B.was taking | C.has taken | D.takes |
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科目: 来源:不详 题型:单选题
If the kids stay indoors all the time and get no exercise, they _________ weak.| A.become | B.have become | C.will become | D.became |
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科目: 来源:不详 题型:单选题
People _________ rivers for transportation since the beginning of history.| A.used | B.have used | C.use | D.had used |
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科目: 来源:不详 题型:单选题
| A.am waiting | B.have waited |
| C.was waiting | D.waited |
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科目: 来源:不详 题型:单选题
| A.waited for | B.is waiting for |
| C.was waiting for | D.has waited for |
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科目: 来源:不详 题型:单选题
| A.is sold | B.was sold | C.sells | D.sold |
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科目: 来源:不详 题型:单选题
| A.will arrive ; arrives | B.arrives ; will arrive |
| C.will arrive ; will arrive | D.arrives ; arrives |
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科目: 来源:不详 题型:单选题
| A.help | B.helped | C.am helping | D.was helping |
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科目: 来源:不详 题型:单选题
| A.buy | B.were bought |
| C.are bought | D.bought |
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科目: 来源:不详 题型:单选题
| A.were doing homework |
| B.were cleaning the classroom |
| C.were fighting |
| D.were learning English |
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