问题详情：
选词填空
pay opportunity afford running prefer must |
mother couldn’t______to pay for her child’s education.
summer I had an ______to volunteer at the local hospital.
put the burned area under cold______ water.
photo _____be Liu’e are his parents.
5.I______classical music to pop music,
【回答】
1;afford 2;opportunity 3;running 4;must 5;prefer
知识点：选词填空
题型：完成句子
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