You should do what you can ____ your English， Li Ming．
Ok， I will． Thank you， Ms． Hu．（ ）
| A． |
improve |
B． |
to improve |
C． |
improving |
D． |
improved |
More trees every year to make our city greener．（ ）
| A． |
is planted |
B． |
are planted |
| C． |
was planted |
D． |
were planted |
To avoid making mistakes， please read the questions before you answer them．（ ）
| A． |
careful |
B． |
careless |
C． |
carefully |
D． |
carelessly |
Hong Kong is __ the south of China， it's one of the busiest cities in the word．（ ）
| A． |
in |
B． |
on |
C． |
at |
D． |
to |
My sister practices playing ___ piano for the coming talent show．（ ）
| A． |
a |
B． |
an |
C． |
the |
D． |
/ |
Ben， could you tell me____？
He's my cousin from Shenzhen（ ）
| A． |
who he is |
B． |
where is he |
| C． |
who is he |
D． |
where he is |