Blue whales are ． We should try to protect them．（ ）
A．in timeB．in publicC．in danger
Beijing is one of ______ biggest cities in China．（ ）
| A． |
a |
B． |
an |
C． |
the |
D． |
/ |
What kind of musicians do you like？
I like musicians ______ play different kinds of music．（ ）
| A． |
which |
B． |
whose |
C． |
whom |
D． |
who |
Please ______ all the lights when you leave the classroom．（ ）
| A． |
turn on |
B． |
turn off |
C． |
turn down |
D． |
turn up |
The boy in red T﹣shirt is our new classmates，______？（ ）
| A． |
isn't he |
B． |
does he |
C． |
is he |
D． |
doesn't he |
The new school ______ last year．（ ）
| A． |
builds |
B． |
built |
C． |
was built |
D． |
is built |