---- Who knocked at the door?  ---- I’ve no idea. I just pretended nobody was at home, so I didn’t ask who was___. 

Charles was alone at home，with _____ looking after him.

He has evidence to prove that he was at ______ place at the time of the crime.

 – Excuse me, can I park my car here?- Yes, you can park on ＿＿＿＿＿＿ side of the street.

We asked Tom and Mike, but ________ could offer any help．