The Turners consider ____ a computer, which is commonly considered _________ a great help in our work and study.
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A
to buy; to be
B
buying; to be
C
to buy; being
D
buying; being
推荐题目
________ many times, he finally understood it.
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A
Told
B
Telling
C
Having told
D
Been told
Do you know we have much difficulty ____ the work on time.. 
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A
on finishing
B
finishing
C
to finish
D
at finishing