When _____ why he went there,he said he was sent there to be trained for a space flight[ ]

_____ what I said to him, he refused to follow my advice.[ ]

I got up late and _____ to school without having breakfast.

It was _____ that caused him to servedinner an hour later than usual.

You aren’ t a student , are you — _____ , don’ t you remember _____ me in the classroom ten minutes ago .