What's the matter _____ they still haven't answered the telegram?
| A．when | B．that | C．though | D．however |
She________ for nearly two hours.
| A．kept talking | B．kept to talk | C．has kept talking | D．kept to talking |
Spring_______ after winter.
| A．comes | B．came | C．has come | D．had come |
—I hear some noise in the next room.
—Oh, yes. Your sister_______ there.
| A．cries | B．is crying | C．cried | D．was crying |
All the students__________ to plant trees and there’s nobody in the classroom.
| A．go | B．will go | C．have gone | D．wound go |
Stop! A little boy_________ the street.
| A．is crossing | B．crosses | C．crossed | D．has crossed |