A.I will swim in the sea.

B.I want to play sports with my friends.

C.I like to sit in the sun.

【答案】C

【解析】

句意为在夏天你喜欢做什么？A我将会去海里游泳。B我想要和朋友去做运动。C我喜欢在太阳下坐着。C符合题意。故选C。