It’s very hard the swimming pool.A. to swim acrossB. to swim cross C. swim acrossD. swim c

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(答案→)A. to swim across
B. to swim cross
C. swim across
D. swim cross
解析：本题考查非谓语动词。It’s + adj + to do sth. across是介词，而cross是动词。句意：游过游泳池是非常困难的。