— people are there in the meeting room?—About 200.A. How manyB. How longC. How muchD. How

问题补充：

— people are there in the meeting room?

—About 200.

A. How many

B. How long

C. How much

D. How often

答案：

(答案→)A. How many

B. How long

C. How much

D. How often

解析：句意：---在会议室有多少人？---大约200。A. How many多少，后加可数名词复数； B. How long多长时间； C. How much 多少，后加不可数名词； D. How often多久一次。故选A。