____ wide spread of H1N1 is _____ challenge for the whole world. Confidence, cooperation and responsibility are keys to overcoming it.
She didn’t recognize the man who hit her because she could only ______a dark shape moving towards her.
Mr Smith was a strict headmaster, but ______ all the teachers and students in our school showed respect for.
Keep yourself confidence up by taking gradual steps forwards, rather than freezing, when ______ with what seems like great trouble.
I’ve already told you that the fourth and last part of the article ______ the most difficult to understand.
Play, often seen as ______activity for kids, is still important in _______ development of teenagers.