---So many problems! I’m tired.---You should try to _________ them by yourself. You are not a child any longer.
We find _______ not easy _______ fifty English words in one day.
-_____ excellent advice he has given us!
What he says is always _________ what he does.
It ________ over ten years since the dog ____________.
--- Have you finished your work _______? ---Yes, I've _______ finished it.