The fact has worried people _______ the number of the deaths is still increasing.
——She shouldn't have done that sort of thing.—Whatever she did was reasonable, ______ to what you did. Besides, it's none of your business.Get down to ______ your lessons.
The number of people invited ______ fifty, but a number of them ______ not seen at the meeting.
A student should not ______ small errors, which might lead to serious mistakes in the future.
— ______ I’m very busy now. Could I call you back after work?—OK. I'll wait for you.
It is not right for you to ______ fifty dollars from my salary without any good reason. You should give it back to me.