Franklin’s ability to learn from observations and experience greatly_____his success in public life. 
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A
attached to
B
connected to
C
related to
D
contributed to
推荐题目
The whole book ________ twelve units, ________ two that are mainly for revision.
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A
contains; including
B
includes; containing
C
contains; containing
D
includes; including
In the ant city, you will see many problems _____ in this way.
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A
settled
B
settling
C
to be settled
D
to be settling