(2019山西改编)—Some schools have used smart uniforms. I wonder ________.

—They can tell parents where their children are.

A.who invented them B.what they are used for

C.when students wear them D.how they are made

Not all children ____ watch this video will become a scientist, but some may become interested in science.

A. whom B. which C. who D. whose

The teacher asked Li Hua             .

A. why is he late for class B. why he is late for class

C. why was he late for class D. why he was late for class

(初高中衔接题) Though he often made his little sister ________, today he was made ________ by her.

A.cry; to cry B.cried; crying C.to cry; cry D.cried; cry

(易错题) Which do you enjoy ________ your spare time, playing computer games at home or taking a walk in the park?

A.spending B.to spend C.spent D.spend

________ their time, many airlines now allow passengers to print their boarding passes online.

A.Save B.To save C.Saving D.Saves

（2016贵州六盘水中考）My father used to drive to work, but he is used to ______ now.

A.walking B.walked C.walks D.walk

My friend invited me ______ the art club , and I accepted it with pleasure.

A.join B.to join C.joined D.joining

Parents should tell their children ________unhealthy food. It's bad for their health.

A.not to eat B.not eating C.to eat D.eating

Meri Snow Mountain is not far away from here, but it will still take us a few hours ________ there by bike.

A.getting B.to get C.got D.get