Congratulations! Among the best pictures in the competition，I found _______. Why did you draw it?一During the trip to the Yellow Mountain _______ May.

Theyhere on foot yesterday.

Some scientists think that it may take ______years to make robots look like people, and do the same things as us.

Teenagers _______ allowed to drive in the street ．

Hefei is a beautiful city, isn’t it?—Yes. There are about two ____ visitors here week.