He may lose the match________he practices hard．
A．if B．unless
C．while D．until
—Your English is very good．Who taught you？
—________．I learned it all by myself．
A．Somebody B．Everybody
C．Nobody D．Anybody
The lady is so________and she believes the man who always tells lies．
A．clever B．smart
C．stupid D．intelligent
They got________excited that they couldn’t get to sleep．
A．very B．enough
C．too D．so
In summer milk will quickly go bad________it is put into a fridge．
A．though B．unless
C．because D．once
We felt________scared that we were afraid to go out at night．
A．such B．pretty
C．quite D．so
