___________the students came from different countries，they got on well in the camp．（ ）
A．WhenB．UnlessC．ThoughD．Until
﹣ Lily， could you please help me hand in my papers to our teacher？
﹣________________． Where are they？（ ）
| A． |
With pleasure |
B． |
Yes， please |
| C． |
Of course not |
D． |
Good idea |
My boss is waiting for the report， so I can't leave here _______I finish it．（ ）
| A． |
since |
B． |
until |
C． |
though |
D． |
if |
Last Tuesday， Li Ming and I did a survey about our classmates' birthdays． Most of them were bornAugust， 2002．（ ）
| A． |
in |
B． |
on |
C． |
at |
D． |
of |
What time is it now， Mike？
It's quarter past five． Let's go to play basketball．（ ）
| A． |
不填；不填 |
B． |
a， a |
C． |
the， a |
D． |
a， 不填 |
Don't throw litter here!
______．（ ）
| A． |
Yes，please |
B． |
You're welcome |
| C． |
Me，too |
D． |
Sorry，I won't |