Some pre-school children go to a day-care center, ___ ___ they learn simple games and songs.

She lives in a house，but she never feels .

Can you see the boys _____ football on the playground They are my classmates.

Which of the two drivers is to blame for the accident ––______. It’s the cyclist’s fault.

The child tiptoed quietly to the bird. ______ into theforest when he was about to catch it.