To their surprise, they found the lecture given by the famous professor easy ______. 
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A
to be understood
B
to understand
C
understanding
D
understood
推荐题目
You can hardly imagine the difficulty Mrs. Jones had ________ up her children.
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A
brought
B
to bring
C
bringing
D
to have brought
Would you mind _________ me some cents? I would like ________ a phone call.
#96974
A
lending, to make
B
borrowing, to make
C
to lend, to make
D
borrow, making
The project, ________ in 2009, has expanded the city’s cellphone network to cover one million users.
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A
accomplished
B
being accomplished
C
to be accomplished
D
having accomplished