While typing, Helen has a habit of stopping _____ to give her long and flowing hair a smooth.
Mary seems _______ the bad news, for she looks nice and happy.
You can only be sure of _______ you have at present; you cannot be sure of something _______ you might get in the future.
His uncle made a film _______ his story in his childhood.
Surely it doesn’t matter where the student associations get their money from; what _______ is what they do with it.
When you ______with the dictionary, don’t forget to put it back on my desk, will you?