Look! The model is walking to us. ______ nice dress!
A．What B．What a
C．How D．How a
— What were you doing ______ I knocked at the door?
— I was sleeping.
A．unless B．once
C．when D．while
Mount Xiaolei is not far away from here, but it will still take us a few hours ______ there by bike.
A. getting B. to get
C. got D. get
— Hi, Sara. Is this ______ English book?
— No. ______ is on the desk.
A．your； Mine B．your；My
C. yours；Mine D．your；My
It is necessary ______ us to help our friends out when they meet difficulties.
A．to B．of
C．with D．for
— What did you do last night, Bob?
— First I did my homework, and then I played ______ piano for half ______ hour.
A．the；a B．/；an
C．the；an D．a；the
