If you cannot have a good command of grammar as well as precise usage of each word you’ve learnt, it is ________ for you to use English flexibly.
Just because they make more money than I do, _____ they seem to look down on me.
The key point is not who said the words, _____ they are true or not.
I’m sorry, ____ I won’t be able to come tonight.
I’m afraid we can’t have coffee; there’s _____ left.
Mr Ascot, headmaster of the school, refused to accept ______of the three suggestions made by the Students’ Union.