Sarah is ______than her sister Susan．Sarah is 166cm tall．Susan is 171cm tall．（ ）
A．shorterB．shortestC．tallerD．tallest
Listen! I think it____ be Mr． White singing in the office．
No， it ___ be him． He left for London just now．（ ）
| A． |
must； mustn't |
B． |
may； mustn't |
| C． |
must； can't |
D． |
can； can |
The population of China is much than that of England．（ ）
| A． |
larger |
B． |
largest |
C． |
more |
D． |
large |
Have you heard of Lin Zexu and Zhan Tianyou？
Of course． They are our national （ ）
| A． |
hero |
B． |
heros |
C． |
heroes |
D． |
hero' s |
Whose iPad is this？
I think it's ___． She was looking for it everywhere．（ ）
| A． |
she's |
B． |
her |
C． |
she |
D． |
hers |
Lucy is ___ shy girl， but she's good at playing piano．（ ）
| A． |
an； the |
B． |
a； the |
C． |
a； / |
D． |
an； / |