My English-Chinese dictionary has disappeared. Who do you think ________ have taken it?[ ]

Thank you ____ me with my homework.

Has it been warned that all the children in this area stayat their homes until the Flu has been controlled

I sent a big bunch of flowers tothe nurse as an of thanks forher taking good care of my grandpa in the nursing home

What on earth are the police busy with? —They have been looking into how the plane crash _______.