【答案】“Whattimeswehad!Ourclassmatesarealreadywritinggood-byemessageseachotherandexchangingphotos.”AGrade9s

问题描述：

“What times we had! Our classmates are already writing good-bye messages ________ each other and exchanging photos.” A Grade 9 student said.

• Afor
• Bon
• Cby
• Dabout

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最佳答案：

【分析】write sth. for sb.“为某人写……”。在此指即将毕业的学生相互给对方写毕业留言。