【单选题】【消耗次数：1】
3. He ______ hard until I told him to sit down and have a break.
①
was working
②
had been working
③
worked
④
has worked
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相关题目
【单选题】
Had he worked hard, he _____ the exams.
①
must have got through
②
would have got through
③
would get through
④
could get through
【单选题】
If he had worked harder, he ___.
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would succeed
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had succeeded
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should succeed
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would have succeeded
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make out for
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keep up with
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so that
②
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③
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He____________ working as if nothing had happened.
①
continue
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continues
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continuing
④
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【判断题】
Before he began to study in the university, he had worked in a company for three years.
①
正确
②
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Tom is hard-working, so its _____________ that he won the match.
①
no wonder
②
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③
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④
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①
opportunity
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③
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④
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随机题目
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①
可提高塑料的强度、硬度、韧性、耐热性、耐老化性、抗冲击性等
②
使线型高聚物交联成体型高聚物，从而制得坚硬的塑料制品
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使塑料制品具有鲜艳的色彩和光泽
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下列关于木材的湿胀干缩说法错误的一项是（ ）。
①
木材细胞壁内吸附水含量的变化会引起木材的变形（膨胀或收缩），即湿胀干缩
②
含水率小于纤维饱和点时，它的增加或减少才能引起体积的膨胀或收缩
③
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经破碎、分级、预热、高温焙烧时急剧加热膨胀而成的一种轻质、多功能材料
②
一种酸性岩浆喷出而成的玻璃质熔岩
③
岩石或高炉矿渣的熔融体，以离心、喷射或离心喷射方法制成的玻璃质絮状纤维
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