you smile at others， they will smile back．（ ）
| A． |
If |
B． |
So |
C． |
Or |
D． |
Though |
How was your life in England？
Quite different from here．_______，people there drink tea with milk．（ ）
| A． |
In my opinion |
| B． |
To my surprise |
| C． |
At the beginning |
Song Joong﹣ki is a movie star in Asia now．
That's true．He was once an excellent skater but had to _______ skating because of an accident．（ ）
| A． |
give up |
B． |
go on |
C． |
take up |
Pandas are much﹣loved around the world．Unluckily，there aren't many pandas left and they're _______ now．So we must save them．（ ）
| A． |
in order |
B． |
in danger |
C． |
in need |
The earth is the planet _______ provides us with everything we need，fresh air，clean water and so on．It's our duty to protect it．（ ）
| A． |
who |
B． |
that |
C． |
where |
I am really proud of my group _______ we're always discussing and sharing study secrets together．How important the group work is!（ ）
| A． |
because |
B． |
though |
C． |
unless |