单选题_____AraisingBraisesCto raiseDraised
单选题
_____
A
raising
B
raises
C
to raise
D
raised
参考解析
解析：
句中逗号前后都没有连词，所以后面句子要用非谓语动词，此处表示“不断增加的担忧”，用使用现在分词raising。
句中逗号前后都没有连词，所以后面句子要用非谓语动词，此处表示“不断增加的担忧”，用使用现在分词raising。
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