单项选择题
A. origin B. source C. basis D. means
The doctor suggests that a person （） exercises every da...
单项选择题The doctor suggests that a person （） exercises every day if he wishes to be healthy.
A. does B. did C. do D. will do
It was from Stephen （） she first heard of the man refer...
单项选择题It was from Stephen （） she first heard of the man referred to as a specialist
A. whom B. who C. that D. when
When I was a child I used （） swimming in the lake.A. to...
单项选择题When I was a child I used （） swimming in the lake.
A. to going B. going C. to go D. go
