This box is ______ heavy ________ I can’t carry it.
________they visited the Science Museum,they showed great interest in everything they saw.
It is reported that a woman as well as two children ______ from a big fire yesterday.
We laugh at jokes, but seldom _____ about how they work.
— Mum why do we eat much vegetable— Because it is ________ to our health.
—Tommy,do the dishes.—Mum,it’s a girl’s job. I would rather ________the floor.