He failed the exam, ______ he tried his best.A. because B. though
题型：不详难度：来源：
He failed the exam, ______ he tried his best.
A. because B. though C. So |
答案
| B |
解析
试题分析：句意为：虽然他尽力了，但是还是考试不及格。because：因为，though：虽然……但是……， So：因此。根据句意可知应选B。 |
举一反三
I’m going to stay at the home _____it’s raining outside.
A. because B. so C. but |
---Did you hear the rain?
---______ .| A．Until 30 minutes | | B．Until 30 minutes later | | C．Not until 30 minutes | | D．Not until 30 minutes later |
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________ ten years ago .| A． Since | B． For | C． When | D． Which |
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I didn’t know anything about it ______my father told me .| A． until | B． because | C． after | D． and |
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The rivers will become dirtier and dirtier _______ we take action to protect them.| A．since | B．if | C．until | D．Unless |
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