The firemen did all their best to put out the fire．
excellent firemen!（ ）
A．WhatB．What anC．How anD．How
I have been in China______ 1997．（ ）
| A． |
since |
B． |
for |
C． |
in |
D． |
until |
Be careful with the knife．You may hurt______．（ ）
| A． |
himself |
B． |
ourselves |
C． |
myself |
D． |
yourself |
Their classroom is as______ as ours．（ ）
| A． |
cleaner |
B． |
clean |
| C． |
the cleanest |
D． |
much cleaner |
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 |