How long does it take you ---（exercise） every day?It's important for models ---(keep)slim.
I don't know how l can finish the work.(改为同义句)
l don't know --- --- ---the work.
人气：303 ℃ 时间：2020-01-30 02:04:14
解答
to exercise
to keep
这两个都是固定句型
how I can finish the work = how to finish the work
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