Qingdao is the most beautiful city ____ I've ever been to．
So it is． Many international meetings are held there every year．（ ）
| A． |
that |
B． |
which |
C． |
what |
Mike lost his school ID card this morning．He is looking for _____ now．（ ）
| A． |
it |
B． |
him |
C． |
them |
I want to be ______ engineer when I grow up．（ ）
| A． |
a |
B． |
an |
C． |
the |
How long is BC in the triangle（三角形）ABC？（ ）
| A． |
4cm |
B． |
8cm |
C． |
6cm |
﹣Where is Zhang Hua？
﹣He ______ Beijing to see his parents and he'll be back tomorrow．（ ）
| A． |
has gone to |
| B． |
has been in |
| C． |
has been to |
I like music ______ I can dance to．（ ）
| A． |
that |
B． |
what |
C． |
who |