问题补充：
--How much the tiger ? –It’s about 100 pounds.
A. does, weight
B. does, weigh
C. is, weight
D. is, weigh
答案：
A. does, weight
(答案→)B. does, weigh
C. is, weight
D. is, weigh
解析：句意：这只老虎多重？大约100英镑。weigh是动词，前用does帮助构成问句。还可以表达为What’s the tiger’s weight?故选B
