China's first home﹣built aircraft carrier（航空母舰） hit the water in Dalian _______ the morning of April 26， 2017．（ ）
A．inB．onC．atD．to
﹣Could you please tell me _____？
﹣Ten years ago．（ ）
| A． |
when you taught in this school |
| B． |
when did you teach in this school |
| C． |
how long you taught in this school |
| D． |
how long did you teach in this school |
The students love the teachers _____ can make their lessons fun．（ ）
| A． |
whom |
B． |
who |
C． |
whose |
D． |
which |
Bob is one of _____ boys in Class1，Grade 9．（ ）
| A． |
clever |
B． |
cleverer |
| C． |
the most clever |
D． |
the cleverest |
﹣Jack didn't go to bed _____ 12o'clock last night．
﹣That's why he was late for school this morning．（ ）
| A． |
until |
B． |
for |
C． |
to |
D． |
at |
The teenagers _____ to choose their own clothes．（ ）
| A． |
allow |
B． |
allowed |
| C． |
are allowing |
D． |
should be allowed |