Look at the big and clean room． It's _______．（ ）
| A． |
Lucy's and Lily's |
| B． |
Lucy and Lily's |
| C． |
Lucy's and Lily |
do you visit your grandmother in the countryside？
Once a month．（ ）
| A． |
How far |
B． |
How long |
C． |
How soon |
D． |
How often |
Mr．Smith be in the office． Because he has gone to Chengdu on business．（ ）
| A． |
mustn't |
B． |
shouldn't |
C． |
can't |
D． |
needn't |
The young man was of all the performers．（ ）
| A． |
more creative |
B． |
much creative |
| C． |
the most creative |
D． |
the creativest |
It's important for us a healthy lifestyle．（ ）
| A． |
to keep |
B． |
keep |
C． |
keeping |
D． |
kept |
They worked for days， and finished the task successfully．（ ）
| A． |
twelve； two |
B． |
twelve； second |
| C． |
twelfth； two |
D． |
twelfth； second |