Don’t talk. Your brother .A. sleepingB. sleepsC. sleepD. is sleeping

问题补充：

Don’t talk. Your brother .

A. sleeping

B. sleeps

C. sleep

D. is sleeping

答案：

A. sleeping

B. sleeps

C. sleep

(答案→)D. is sleeping

解析：根据Don’t talk可知，应该是现在正在睡觉，所以应该用现在进行时，用is sleeping。所以本题选D。