--- What on earth are the police busy with?--- They have been investigating how the train crash __________. 

 My uncle’s house is much smaller than ours, but it is twice         expensive.

－What do you think of my new dress?－________, I don’t think the color suits you.

One of the English teachers Kate eventually __________ her project to the school board for their approval of the speech contest.

Children who are over-protected by their parents may become ________.