Teachers say the Internet has made _______ much easier to find and copy materials.
I have no _______ to the plan, so long as it would not cost too much.
The radiation amount of a mobile phone for two half-hour periods per day is equal to _______ to an X-ray for ten seconds.
—Another cup of coffee? That’s your third since lunch.—Yeah, well, I ____ all night preparing for my history exam. I can hardly keep my eyes open.
. The notice says that only when your identity has been checked _____.
The boy broke the windows by intention, so he certainly deserved _______.