It’s difficult for such a girl to swim the river.A. crossB. acrossC. crossingD. crossed

问题补充：

It’s difficult for such a girl to swim the river.

A. cross

B. across

C. crossing

D. crossed

答案：

A. cross

(答案→)B. across

C. crossing

D. crossed

解析：考查介词。句意“对这样一个女孩来说，游过这条河是困难的。”swim是动词，不能再用动词，排除A；across是介词，swim across“游过......”。故选B。