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【单选题】

Mom was usually busy ______ my younger sister during the night and she ______ have less sleep.
[ ]

A.
tending; tended
B.
tended; tending to
C.
tending; tended to
D.
tended to; tending to
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举一反三

【单选题】He _____the job well, but he____so careless.

A.
had done; had been
B.
could do; was
C.
could have done; was
D.
hadn’t done; had been