问题描述：
1.He enjoyed ( )at the party last night .A.heself B.himself C .themselves D..myself
2.He tried his best ( )the blackboard but he could ( )Nothing .A to look ,see B.look at ,to see .C.to look at ,see
3.Let's pay attention ( )the picture .A.at B.to C.for D.from
2.He tried his best ( )the blackboard but he could ( )Nothing .A to look ,see B.look at ,to see .C.to look at ,see
3.Let's pay attention ( )the picture .A.at B.to C.for D.from
问题解答：
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