The world's longest cross﹣sea bridge， Hong Kong﹣Zhuhai﹣Macao Bridge， opened _____ October 24，2018．（ ）
| A． |
in |
B． |
at |
C． |
by |
D． |
on |
Is this your son's sweater？
No，______ is on the chair behind the desk．（ ）
A．hersB．yoursC．his
I bought ______ useful dictionary yesterday．_______dictionary is very cheap．（ ）
A．a； AB．a； TheC．an； The
Sometimes you have to stop too much and just go where heart takes you．（ ）
A．thinkB．to thinkC．thinking
Some of my classmates an English play at the art festival two days ago．（ ）
A．haveB．hadC．has
Cao Yinpeng is a 9﹣year﹣old Chinese boy． He is known
saving his father's life．（ ）
A．forB．atC．by