-We shouldn't worry about Mary．
-You are right． She is ______to look after______．（ ）
| A． |
old enough； herself |
B． |
big enough； herself |
| C． |
enough old； her |
D． |
enough big； her |
If more people give up driving cars，the air will get much in a few years．（ ）
| A． |
clean |
B． |
cleaner |
| C． |
the cleaner |
D． |
the cleanest |
He climbed so fast that he reached floor in two minutes．（ ）
| A． |
nine |
B． |
the nine |
C． |
the ninth |
D． |
ninth |
Tim，we're going to Beijing for vacation，please some information online．（ ）
| A． |
look for |
B． |
look out |
C． |
look after |
D． |
look up |
There is wrong with Tom's leg，we should send him to hospital at once．（ ）
| A． |
something |
B． |
anything |
C． |
everything |
D． |
nothing |
Hi，Susan，When is Teachers' Day in China？
It's September 10th．（ ）
| A． |
in |
B． |
on |
C． |
at |
D． |
for |