We are supposed to care about the workers keep our city clean．（ ）
A．whichB．whoC．whom
he is only seven years old， he knows a lot about science．（ ）
| A． |
But |
B． |
Though |
C． |
So |
Would you mind me how to remember English words？
Of course not．（ ）
| A． |
tell |
B． |
to tell |
C． |
telling |
Don't worry． There a lot of chances in front of us．（ ）
| A． |
are |
B． |
is |
C． |
have |
How beautiful the mountain is! I'd like to a tent there．
You'd better not．（ ）
| A． |
put on |
B． |
put off |
C． |
put up |
"Julie， the more you practice， the you will play the piano．" said her Dad．（ ）
| A． |
well |
B． |
better |
C． |
best |