一般备用车必须备满（）h，才能解除备用。
A.12
B.24
C.36
D.48
参考答案：D
My older brother Tony wanted to dig a hole to China.
—May I speak to Mr Wang?
—Sorry. He______ a speech now. Please call later.[ ]
A. gives
B. gave
C. will give
D. is giving
