1．A w____________is a person who sees what happens with his or her eyes on the spot.
2．The word“explode” means “to b____________ with a lot of force and loud noise”．
3．We should learn from her, for she is always doing good d____________ by helping anyone in trouble.
4．May we offer our deepest s____________on the death of your wife.
5．You did it____________(故意地)，just to annoy me.
