—Shall we get off the bus here?
—Yes. But we won’t get off _______ it stops.

—Susan, what are the advantages of MP5 players?
—Mom, they are smaller and lighter ______ they can be carried very easily.

Think it over, _____ you’ll work out the math problem.

Nobody will help you________ you help yourself.
A. unless               B.  because             C. though

 I don’t like bread. I won’t eat it______ I am very hungry.
A. unless           B. when         C. because

 —_____ is the population of America?
—I don’t know. But I know it’s _______ than that of China.
A. What; smaller    B. How much; smaller   C. What; less       

----Why  do  you   look  so tired ?
----_______I  am writing a report for the newspaper.

______Miss Wang can 　remember , she has not met the girl before .

—       do you play sports?
—Every day.
A、How long                 B、How far              C、How often

The twins both like sports,      Lily is more athletic than Lucy.
A、or                       B、although             C、and