I can ______ be a teacher. I’m not a very patient person.               

As soon as his teacher begins lecturing, he begins to doze off, not intentionally but _______.

The members of the board are discussing the problem right now; it will _____ have been solved by the end of next week．

Of the two coats, I’d choose the red one, for I am ______ fond of it.

It’s always difficult being in a foreign country, ________ if you don’t speak the language.