What a nice day! How about playing football afterschool. ________! Lest’s ask Li Ming to go with us.

You should ___ the lights if there is no one in the room.

Our class will go to the National Park next Sunday ——________ it rains, of course

It is reported that people throw ________ plastic bags along this street every day.

A low-carbon(低碳) lifestyle has an effect ourdaily life. People are paying more and more attention to energiesthese days.