The world's longest cross﹣sea bridge， Hong Kong﹣Zhuhai﹣Macao Bridge， opened _____ October 24，2018．（ ）
| A． |
in |
B． |
at |
C． |
by |
D． |
on |
It is accepted by everyone that knowledge is the most valuable _______ for human beings．（ ）
A．standardB．treasure
C．inventionD．instruction
I'm a little hungry，Mum!
There are some apple pies on the table，you may take ______．（ ）
A．itB．thisC．thatD．one
What do you think of Wilson's speaking？
No one does _______ in our school．（ ）
A．goodB．wellC．betterD．best
It is five years since we began to enjoy a ______ spring holiday each year．（ ）
A．ten﹣dayB．ten dayC．ten days'D．ten days
Do you know _____ girl with long curly hair？
Yes，she is Mary．She plays ______ piano very well．（ ）
A．a；/B．the；/C．the； theD．a； the