问题
单项选择题
I（）having your approval for the routine maintenance at your earliest convenience.
A.hope to
B.want to
C.look forward to
D.expect to
答案
参考答案：C
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I（）having your approval for the routine maintenance at your earliest convenience.
A.hope to
B.want to
C.look forward to
D.expect to
参考答案：C