问题
It was my sister ________ first had the idea to cycle along the entire Mekong River.
A:who
B:whom
C:/
D:which
B:whom
C:/
D:which
正确答案是：
同类题型
How old is your mother? —She is ______years old. Today is her ______birthday.
.—Excuse me, is the book shop far from here?—No, it is just _________ of our college.
Mrs. White, when shall we go for a picnic?—If it _____, we _____ for a picnic in the park tomorrow.