–Are there any music rooms on the second floor?No, _________ .A. there are B. there aren’t C. they are
Plastic bagsthe park messy and dirty. A. make B. makes C.making
To keep the air clean,don’tto work every day. A. walk B. ride C. drive
Weplasticbags and bottles. A. use,make B.to use,to make C. use,to make
use too much plastic. A. Can’t B. Shouldn’t C. Don’t
Wereuse and save water. A. can’t B. should C. shouldn’t