If the kids stay indoors all the time and get no exercise, they _________ weak.A
题型：不详难度：来源：
| A．become | B．have become | C．will become | D．became |
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答案
| C |
解析
试题分析：句意：如果孩子们一直呆在室内并且得不到锻炼，他们将变得很虚弱。If引导的条件状语从句主句用一般将来时，从句用一般现在时，结合语境故选C |
举一反三
| A．used | B．have used | C．use | D．had used |
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---Mum, it’s late. Why are you still here?
---Dad hasn’t come back yet. I _____ for him.| A．am waiting | B．have waited | | C．was waiting | D．waited |
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---Why didn’t you go shopping with me two hours ago?
---Because my mother________ me outside.| A．waited for | B．is waiting for | | C．was waiting for | D．has waited for |
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It’s said that this kind of milk ________ well this year. It will be sold out soon.| A．is sold | B．was sold | C．sells | D．sold |
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--Do you know when Jim _________ ?
---I don’t know. As soon as he , I will call you.| A．will arrive ; arrives | B．arrives ; will arrive | | C．will arrive ; will arrive | D．arrives ; arrives |
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