根据句意及首字母提示填词。

1.  — What time do you get up in the morning?

     — I get up at a q____ past six.

2. My father is a d____, he works in a hospital.

3. — Who are the old man and the old woman in the photo? 

    — They are my g____.

4. — Does your brother have a r____ face?

    — Yes, and he has small eyes.

5. Please look a____ your sister at home.

混凝土立方体标准抗压强度标准值，试验时要求的养护时间为（）天。

A．3

B．7

C．28

D．45