Yesterday I saw a woman ______ in the street, with a little boy ______ on her shoulder.[ ]

It’s reported that young people are responsible for 60% of the traffic accidents.—Exactly. Young drivers are far more _______ to drive faster than old ones.

People, especially teens, think it_______great fun to surf on________ Internet. — I agree with you.

the words of pop songs a good way to learn English.

e another wonderful discovery, _______ of greatimportance to science