请根据句意从方框中选择合适的动词，并用其适当形式填空，使句子通顺。

leave     reply    control     drive      take

 
---Who ________ my new key?   ---I can’t find it anywhere. I put it here last night.
When I passed him just now, he ________the icon on the computer with the mouse.
I________(leave) alone at home last night because my parents went out for a party.
---How often do you write to your online friend?
--- Once a week, and he always ____________ to me in time.
---How soon ________your mother _________ back home from work?  ---In half an hour.