John always thinks of others instead of himself.—So she does. It is __________ of him to offer help to others.

Mrs.Black is a _______music teacher and she can sing_______

The fog in your city must have been very thick; if not, you would have been here as scheduled.—Yes. Our flight _________ by the thick fog.

I have _____rules in my home.We have_____homework to do today.

The expert says that it’s good to encourage children to try new things, but try not to______ them too hard.[ ]