David ________so hard. He is always the first to come and the last to leave.

A.will work B.works C.worked D.was working

Tokyo 2020 Olympics ________ in 2021 because of something unexpected.

A.held B.will hold C.was held D.will be held

You’d better _________ patient with your parents when they talk to you.

A.be B.to be C.been D.being

—________do you visit your grandparents, Timmy? — Once a week.

A.How often B.How long C.How fast D.How many

— How time flies! The long term is coming to an end.

— Yes. We have to say goodbye, ________ our friendship will last forever.

A.and B.but C.or D.so

We are close friends. ________, we know everything about each other.

A.As well as B.After all C.Above all D.As a result

Time waits for no man． But some people won't realize the importance of time______it's gone．

A. as B. since C. when D. until

— Mary, could you tell me ________ this novel?

— Oh, I bought it on the Internet last Sunday.

A.where did you buy B.where will you buy

C.where you bought D.where you will buy

— Amy, your pronunciation is so beautiful now. How do you make it?

— Thanks. Just as the saying goes, “________.”

A.Each dog has its day B.Many hands make light work

C.Practice makes perfect D.The early bird catches the worm

—Thanks for sharing your masks with us!

—________.

A.My pleasure. B.Never mind. C.That’s right. D.I'd like to.