用括号内所给词的适当形式填空。

1. Mr. Brown (like) _____ blue socks.

2. Lillian (not have) _____ the green dress.

3. Hello, I (be) _____ John Smith.

4. What (be) _____ your name?

5. How much (be) _____ those black pants?

6. Excuse (I) _____, where are my shorts?

7. What color (be) _____ the oranges?

X模式的询问与应答脉冲间隔是（）。

A.均为36μS

B.均为12μS

C.12MS；36MS

D.36μS；30μS