【单选题】【消耗次数：1】
Not until three years ago _____ to work outside.
①
he began
②
he begins
③
began he
④
did he begin
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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
错误
【单选题】
His father began to work ______ he was seven years old.
①
as old as
②
as early as
③
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④
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【单选题】
5. His father began to work ____he was seven years old.
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as old as
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as early as
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②
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③
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①
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②
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③
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④
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Abraham Lincoln was raised to farm work, ____ he continued until he was twenty-two.
①
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②
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③
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④
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It was not until he arrived in class _____ realized he had forgotten his book.
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①
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②
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③
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随机题目
【单选题】
静脉内给药直接进入入血液循环外，其他药物均有一个吸收过程，吸收顺序由快至慢依次为：（）。
①
静脉舌下含服肌内注射皮下注射皮肤
②
静脉舌下含服肌内注射皮下注射口服皮肤
③
静脉舌下含服皮下注射肌内注射皮肤
④
静脉舌下含服肌内注射皮下注射皮肤