If I knew the answer, I wouldn't be asking, ______?
A.didn't I
B.did I
C.would I
D.wouldn't I
I ______talk that way if I were Frank.
A.won't
B.didn't
C.couldn't
D.wouldn't
I don' t think he is serious, ______ ?
A.do I
B.is he
C.don' t I
D.isn' t he
I suppose you are not serious, ______?
A.do I
B.don't I
C.are you
D.aren't you
—_________________.
A.I don’t care
B.It doesn’ t matter
C.Don’ t be sorry
A.I didn't either
B.Nor I did
C.So didn't I
D.Also didn ' t I
It seems that there is______ that I can't do.
A.nothing
B.anything
C.everything
D.none
A.IΔ>30mA,TΔ=0.1s
B.IΔ=30mA,TΔ>0.1s
C.IΔ>30mA,TΔ>0.1s,IΔ•TΔ≯30mA •0.1s
D.IΔ>30mA,TΔ>0.1s
—Do you know Jim quarreled with his brother? —I don't know, ______.
A.nor don't I care
B.nor do I care
C.I don't care neither
D.I don't care also