单项选择题
When she was busy tidying the room, her little kid is always().
A. under way B. on the way C. in the way D. by the way
单项选择题 The train () of the station right on time.
单项选择题 Living in the central American desert has its problems, () obtaining water is not the least.
单项选择题 I like this song () your opinion.
