单项选择题
A. since B. because C. for D. when
Carolina is American, （）she speaks French well A. for ...
单项选择题Carolina is American, （）she speaks French well
A. for B. so C. but D. as
（）players came onto the field A. To be cheering ...
单项选择题（）players came onto the field
A. To be cheering B. Cheered C. The audience cheering D. Having cheered
（）running, the marathoner fell down A. Finishing ...
单项选择题（）running, the marathoner fell down
A. Finishing B. Having finished C. He finishing D. Being finished
