--What on earth are the police busy with? ---They have been looking into how the plane crash _______.
Is this the reason ____at the meeting for his carelessness in his work?
My headmaster usually ___his speech with a funny joke .
If you don’t know the meaning of the word ,you can ____the dictionary.
Oh,it’s you! I ___you ___coming.
John has put on so much weight recently that his mother has to ____all his trousers to his measure.