---- Last night,you forget _____off the computer when you went to bed.----- Really?I remember _____off.
Tom is ____________ boy now.
-----I bought this dictionary two weeks ago. ----You mean you __________ it for half a month.
The twins has studied in this school ________ .
------When and where ____you _____the bag?------ Oh, yesterday in my desk.
------Where is your father?------He _______ Shanghai. He has ______ there for a week.