”I’m sorry I forgot______ the letter for you!”“It doesn’t matter, I’ll post it myself.”

Bees always remember ________back the same way _______they went.

He’s never late for school, _______ he-_______. He gets to school on time every day.

During the Singles Day in 2017, the sales of Chinese e-commerce giants such as Alibaba outnumbered of Black Friday and Cyber Monday in the US.

The owner of the mine was ________ to twenty years in prison because he had broken the law to employ children as miners.[ ]