Could you tell me ___________ the music？
He used traditional Chinese music art and the sounds of an ancient Chinese bell．（ ）
A．how he madeB．how did he make
C．why he madeD．why did he make
My math teacher lives an active life． She looks as____as she was ten years ago．（ ）
| A． |
young |
B． |
younger |
| C． |
the youngest |
D． |
youngest |
You____stop when the traffic lights turn red．（ ）
| A． |
can't |
B． |
may |
C． |
must |
D． |
needn't |
Their parents don't allow them____in the river because it's really dangerous．（ ）
| A． |
swim |
B． |
swimming |
C． |
to swim |
D． |
swam |
Please_____the TV． It's time to go to bed．（ ）
| A． |
turn on |
B． |
turn off |
C． |
put on |
D． |
put off |
____people visited Hongyadong， Chongqing on May Day this year．（ ）
| A． |
Thousand |
B． |
Thousands |
| C． |
Thousand of |
D． |
Thousands of |