Firstlyifwecan'twell,wewelltired.butweareoftentoobusy.Wecan'tourworkinthedayandwemustdoitatnight.

Question

Firstly if we can't____well ,we well tired.but we are often too busy.We can't ____our work in the day and we must do it at night.

Answer 1

sleep
do
句意:一开始我们睡不好,我们太累了.但我们经常非常非常忙.因为白天不能干少,必须晚上做.