Why ______ we close that chemical factory？
Because it has caused lots of pollution． We need better environment．（ ）
| A． |
must |
B． |
can |
C． |
may |
Guizhou Huangguoshu Waterfall．Thousands of visitors come to visit it every year．（ ）
| A． |
is in control of |
| B． |
is responsible for |
| C． |
is known for |
"John，is the book on the desk yours？""No，it's my ．She left it here yesterday．"（ ）
| A． |
sister's |
B． |
sister |
C． |
sisters' |
The number of students in this university grown quickly over the past ten years．（ ）
| A． |
have |
B． |
has |
C． |
is |
My mom often tells me is good for my health to go to bed early and get up early．（ ）
| A． |
this |
B． |
that |
C． |
it |
"Tara is good at singing English songs"" "．（ ）
| A． |
So am I |
B． |
So do I |
C． |
So will I |