The Great Wall runs about 21,200 kilometres．
Wow! ______________．（ ）
A．It's OKB．Good idea
C．That's amazingD．You are welcome
I can't find my ticket．I think I have lost ．（ ）
| A． |
it |
B． |
one |
C． |
at |
D． |
on |
Tianjin is beautiful city in north of China．（ ）
| A． |
a；a |
B． |
a；the |
C． |
the；不填 |
D． |
不填；the |
I didn't accept his help I wanted to try it myself．（ ）
| A． |
because |
B． |
though |
C． |
until |
D． |
unless |
Volunteers from Lantian Saving Team have saved many travelers in the mountains．
．（ ）
| A． |
How great a man |
B． |
How great men |
| C． |
What a great man |
D． |
What great men |
My mother a good example for me since I was young．（ ）
| A． |
was |
B． |
has been |
C． |
will be |
D． |
is |