On (A) no condition that they are (B) to open fire (C) without a (D) warning.
A.On
B. that they are
C. open fire
D.a

The weather is hot today, _____________?
A.isn't there
B.isn't he
C.isn't it
D.aren't they

You have not seen Romeo and Juliet, _____________?
A.do you
B.will you
C.are you
D.have you

They used to work as doctors, ______?
A.didn't they
B.weren't they
C.did they
D.don't they

You enjoy watching football, ________?
A.do you
B.do not you
C.don't you
D.aren't you

You had a bad cold last night, ________?
A.hadn't you
B.didn't you
C.wouldn't you
D.weren't you

You are not hungry, ________?
A.are you
B.do you
C.don't you
D.aren't you

No one is better at cooking than his mother, ____?
A.are they
B.is she
C.isn’t she
D.aren’t they

You did not do your homework, ________?
A. are you
B.did you
C.didn't you
D.will you

Not until 1911.... .
A.identified the first of the vitamins
B.the first of the vitamins identified
C.was the first of the vitamins identified
D.the first of the vitamins was identified