A.until you have signed
B.after you are signing
C.once you've signed
D.as soon as you signed

A.invite
B.promise
C.divide
D.attract

A.dynamic
B.counterpart
C.argument
D.excellence

A.If I didn't prepare carefully for the final test, I would not get the disappointing result.
B.If I had prepared carefully for the final test, I would have got the disappointing result.
C.If I hadn't prepared carefully for the final test, I would have got the disappointing result.
D.If I had prepared carefully for the final test, I wouldn't have got the disappointing result.

A.If I didn't prepare carefully for the final test, I would not get the disappointing result.
B.If I had prepared carefully for the final test, I would have got the disappointing result.
C.If I hadn't prepared carefully for the final test, I would have got the disappointing result.
D.If I had prepared carefully for the final test, I wouldn't have got the disappointing result.

A.As she had a successful father, she did not bother to set herself a goal to achieve.
B.She attained success after sailing through the ordeals thanks to the valuable assistance from her father.
C.The realization of her aim did not happen until she finished all of the challenging tasks set by her father without any aid.
D.After getting over all obstacles by herself, she became as successful as her father, achieving her ambition.

A.Hardly had Paul realized he was on the wrong flight when the airplane took off
B.Not until the airplane had taken off did Paul realize he was on the wrong flight.
C.No sooner had the airplane taken off than Paul had realized he was on the wrong flight.
D.It was not until the airplane had taken off, did Paul realize he was on the wrong flight.

A.comfortable black leather
B.comfortable leather black
C.black leather comfortable
D.black comfortable leather

A.comfortable black leather
B.comfortable leather black
C.black leather comfortable
D.black comfortable leather

A.Subsequently
B.However
C.Moreover
D.Therefore