Many historians wrote the Sacco and Vanzetti died for their political views，their（）.

Too much work and no time for rest is a （）on him both physically and mentally.

A.deposit
B.burden
C.cover
D.revolution

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Her sister cares much about fashion and her clothes were （）always.

A.up to date
B.up-to date
C.up to-date
D.up-to-date

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