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.
问题描述：
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.
答
to exercise
to keep
how to do
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