—Don't forget to come to our school assembly(集会)tomorrow morning.
—I won't. I was___________ just now.
| A．reminded | B．promised |
| C．allowed | D．required |
— I can’t decide __________or not I should encourage my son to be a volunteer.
— Why not? It will make him more helpful.
| A．if | B．whether |
| C．how | D．why |
— Grandpa has changed a lot.
— So he has. He used to _________ games with the children.
| A．play | B．playing |
| C．played | D．plays |
—________do you prepare for an exam?
— By going over all my notes.
| A．How | B．Why | C．When | D．Where |
—What’s wrong with you?
—I wasn’t careful enough and _______an old man while walking along the street.
| A．knocked off | B．knocked up |
| C．knocked into | D．knocked out |
—Shall we drink the tea now?
—No, the tea should be ______in the water for some time before you drink it.
| A．stayed | B．staying |
| C．kept | D．keeping |