She enjoys _________ in summer.A. go to swimB. going swimmingC. goes to swim
Helen has two sisters and a brother. Her brother is working, but _________her sisters are still at school.
Now the train service is very good. The trains are _________on time.
_________ March 28, about 20 Chinese cities turned off lights of major buildings for one hour.
There isn’t _____in today’s newspaper.
He often rides a bike to school , but I _______to my school.