Please look at these two photos _______, and you will find out five differences between them.
The telephone ________ in 1876.
Look! The workers ________ some subways now. the traffic in Nanning will be better soon.
You will be late for school ________ you don’t get up early.
Animals are our good friends. We are supposed ________ them.
–Have you ever been to Guilin? --No, ________. I hope I can go there next year.