用括号内所给词的适当形式填空。

1. — Could you tell me how __________ (get) to the market? 

      — Go down this road to the end, and you'll find it.

2. It's 8:00. The students _______ (have) lessons.

3. The baby is crying. He _______ (fall) down from the bed just now.

4. It is an interesting story, so each of children enjoys ______ (read ) it.

5. Tomorrow is her daughter's _______ (nine) birthday. She'll buy some presents.

某股票的β值是l．3，市场组合的年预期收益率为8%。无风险利率为3%，则该股票的要求回报率为（）。

A.10．4%

B.9．5%

C.6．5%

D.l3．4%