问题补充:
-- ? --Yes, it is.
A. Is Bob a boy?
B. Are you ten?
C. Is your pen blue?
D. Is she here?
答案:
A. Is Bob a boy?
B. Are you ten?
(答案→)C. Is your pen blue?
D. Is she here?
解析:Is Bob a boy?鲍勃是个男孩吗?Are you ten?你十岁吗?Is your pen blue?你的钢笔是蓝色的吗?Is she here?她在这儿吗?根据下文,是的,它是。英语中it一般用来指前文提到的非生命的物品,故选C。