How do you like your English teacher— He is great. We friends since three years ago.

You look so worried, what’s wrong—More and more people like me become to worry aboutthe __________ pollution after the haze (雾霾)appeared in Beijing and some other cities in China.

you handed in your schoolwork yet—Yes,I haveI guess it _______ now

__________ do you go swimming every week — Twice.

You look very nice in your new dress today.—Thank you. I ______ it a week ago.