--- Are you going to __________ this challenge?(挑战)
— ________ does it take to get to school? — It takes about 15 minutes.
Listen! Who ______ in the classroom?
— What does your English teacher look like? — She medium height.
下列单词中,划线部分发音不同的一个是 .
—I don’t know where to go this summer vacation.—Why not ______ visiting Mount Tai? There are many places of interest there.