问题
How long have you been here? —___ the end of last year
A:Since
B:At
C:By
D:In
B:At
C:By
D:In
正确答案是：
同类题型
What about the protection?— Let’s keep the surface ________ dirt by putting a cover on it.[ ]
John was dismissed last week because of his _____ attitude towards his job. [ ]
Mum, I’m old enough to wash________ clothes by myself.—All right. You can just wash________.
It’s your decision — you must ____ theresponsibility if things go wrong.