Be careful with the knife．You may hurt______．（ ）
| A． |
himself |
B． |
ourselves |
C． |
myself |
D． |
yourself |
Do you know ____ ？（ ）
| A． |
how old is he |
| B． |
how old he is |
| C． |
he is how old |
My sister ____ be lazy． But now she's working really hard．（ ）
| A． |
used to |
| B． |
is used to |
| C． |
was used to |
____ will you go back to your hometown？
In a week．（ ）
| A． |
How long |
B． |
How far |
C． |
How soon |
Shall we go to see the documentary Amazing China or stay at home？
Either is OK． ____．（ ）
| A． |
Go ahead |
| B． |
It's up to you |
| C． |
That's all right |
She stopped talking ____ her mother came into the room．（ ）
| A． |
as soon as |
B． |
unless |
C． |
though |