——May your pen be in your pencil-box?——Ah___
问题描述：
——May your pen be in your pencil-box?——Ah___
A.so it may
B.so it is
C.so is it
D.so may it
答
答案与简析：B.易错选A,此题根据Ah判断,pen已经找到了,故用B.如不能作出准确的判断（如I think等）时,才能用A.