He had just fallen asleep ________ the telephone rang last night.
Tom insisted what he said ______ true, but we insisted that he _____ and have a look.
I’d prefer ______ in the office rather than ______ at home watching TV.
Half an hour has been made full ______ of _____ the problem.
Neither of them knows the difference ______ the two and we can’t tell one ______ the other, either.
— Smoking is bad for your health. — Yes, I know. But I simply can’t ____________ .