【单选题】【消耗次数：1】
5. There are seven days in _______ week.
①
a
②
the
③
an
④
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相关题目
【单选题】
5. His father began to work ____he was seven years old.
①
as old as
②
as early as
③
as soon as
④
as much as
【单选题】
This ATM has been out of service for a few days. It should ____ last week.
①
be fixed
②
have fixed
③
fix
④
have been fixed
【单选题】
This ATM has been out of service for a few days. It should ____ last week.
①
be fixed
②
have fixed
③
fix
④
have been fixed
【单选题】
— I drove to Zhuhai for the air show last week. — Is that ____ you had a few days off?
①
why
②
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③
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④
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随机题目
【单选题】
人体内维生素D的生理活性形式为?
①
25-(OH)-D3
②
24，25-(OH)2-D3
③
25-(OH)-D2
④
1，25-(OH)2-D3 1，25-(OH)2-D2