Our classroom by students every afternoon．（ ）
A．is cleanedB．was cleaned
C．cleans
I use your dictionary？
Sure， here you are．（ ）
| A． |
Must |
B． |
May |
C． |
Need |
D． |
Should |
Today many foreigners enjoy working or studying China．（ ）
| A． |
to |
B． |
by |
C． |
on |
D． |
in |
Lucy and Claire are sisters．________often help their mother do the housework．（ ）
| A． |
We |
B． |
You |
C． |
They |
D． |
She |
In the following words，which underlined letter of the word has a different sound from the others？（ ）
| A． |
fact |
B． |
address |
C． |
alive |
D． |
asleep |
Miss Gao often advises we should search for some on the Internet about science．（ ）
| A． |
instruction |
B． |
introduction |
| C． |
information |
D． |
invention |