跟别人初次见面,应该说:A. How are you?B. Nice to meet you.C. How do you do?
, people shouldn’t drive so much.A. To save water B. To save trees C. To save energy
When is World Environment Day?It’s ___________.A.on 10th September B.on 5th June C.on 22nd April
Look, Sam is starting a poster.A.makes B.to make C.make
Plastic bags the park messy and dirty.A. make B. makes C.making
To keep the air clean,don’t to work every day.A. walk B. ride C. drive