_________ the math problem is difficult, I’ll try hard to work it out.
A. When        B. Though      C.  Before

— I heard the weather of North China is very cold in winter.
— I’m sure you’ll __________ it very soon if you come.
A. be used for  B. used to    C. get used to

Have you ever heard _________ interesting story?
A. so an       B. such an        C. so

 important us to learn English well.
A. That’s;for B. It’s;for C. It’s;of

---When we meet？
---Let’s make it eight.
A.must B. did C. shall

---    do you go cycling?
---Once a week.
A. How long B. How often C. How much

Jim is boy.
A. an 8-years-old
B. an 8-year-old
C. a 8-year-old

—____ are they?
—They are Maria and Jane.

—Is she Maria?
—   , she ____.

—____ your name?
—My name is Kate.