Now most families have only one child _____ our country’s one-child policy.
A.  since        B. because           C. because of

_____you have a talk with him ，you will know he is a good person .
A. Once         B. unless        C.   Though

---      is it from your home to the museum?   --- About six kilometers.

In summer, food goes bad easily     the weather is very hot.

—_______he is very old, he works very hard.
— Wow, great. I should learn from him.

Peter wasn’t late for the meeting           he missed the ferry.

_________you don’t give up(放弃)，your dreams will come true.

Li Hua’s shoes are as _______ as Zhang Hui’s.

_____ it was very cold, _____ my friend still went swimming this morning.

     he is ill,       he goes to school.