许多动物都处于灭绝的边缘。
Many animals are ___________________ extinction(灭绝).
学生把英语用来作为第一外语来学习。
English ___________ by the students as the first foreign language.
众所周知，政府鼓励人们用布袋去购物。
It is well-known that the government ___________________ go shopping with the cloth bags.
在过去，人们的衣服都是用手工做的，一次只能做一件。
In the past people’s clothes were made one at a time ____________.
据我所知，他们将在下个月回来。
___________________, they will come back next month.