–please don’t forget _______ the window when you leave.--OK.
The old man lives ____ but he doesn’t feel ____.
Li Lei isn’t ____ Liu Ming.
Please be quick, or we will have no time ____ have lunch.
—Mom, my classmates invited me ____ a field trip. May I go with them?—OK.
On my way ____ home, I lost a ticket ____ Titanic.