【单选题】---it's raining. take an umbrella? ---All right.
【单选题】报表管理系统中,( )定义了报表数据之间的运算关系,可以实现报表系统从其他子系统取数的功能,所以必须定义它。
【单选题】It’s raining. Please take ______ orange raincoat on the desk with you when you go out.
【单选题】. It isn’t raining. There’s no ________________.
【单选题】They are playing football,____it’s raining.
【单选题】You'd better _____ outside. It's raining. [ ]
【单选题】He usually____ at home when it's raining. [ ]