left the door unlocked must be held responsible for the accident.
May I use your bike? I'm going to see my uncle who _______ this city.
It is playing computer games _______ the boy spends most of his spare time.
---What's he size of the smaller one? ---It's _______.
---Why isn't he in the hospital with his injured mother? ---No one ______ him of the accident.
---When will you be back? ---________.We'll meet at the end of the month.