Ihad to work extremely carefully,for I didn't know how long（）toget used to the new tool.

单项选择题Can you explain（）having done such a thing.

A．the reason to me for
B．the reason on me why
C．me the reason why
D．me the reason for

单项选择题（）is stupid （） you to say so.

A．It;for
B．It;of
C．That;for
D．This;of

单项选择题The thing that（）is not whether you fail or not, but whether you try or not.

A．cares
B．matters
C．considers
D．minds

单项选择题Although they meet with difficulties, I hear that they’ve succeeded（）.

A．in all
B．after all
C．above all
D．first of all

单项选择题I’m looking for the curtain that can（）the carpets in my rooms.

A．suit
B．match
C．fit
D．agree