You will fall behind others_______ you work hard.
A．if B．unless C．though D．since
-I don't know about you, but I'm sick and tired of this weather.
-_______. I can't stand all this rain.
A．I don't care B．It's hard to say C．So am I D．I hope not
- What do you want to be when you grow up?
-I want to be_______ social worker. Many people are in great need of our help.
A．a B．an C．the D．不填
David_______ all night in order to watch the football match between France and Italy.
A．put up B．stayed up C．got up D．showed up
- Look! Somebody_______ the sofa.
-Well, it wasn't me. I didn't do it.
A．is cleaning B．was cleaning C．has cleaned D．cleans
My brother would like to buy a good watch but_______ was available from that shop.
A．nothing B．neither C．no one D．none
