Do you know the difficulty he had ______

Do you know the difficulty he had _______the work?

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on finishing

to finish

finishing

finished

推荐题目

 ________ with conducting an interview by QQ online, a facetoface interview in person can provide people with more reliable details.

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Comparing

Compared

To compare

Compare

Though ________ experience, he soon got a higher pay by working hard.

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lacked

lacking of

lacking

lacked in

—Shall we go swimming?—OK.I’ll go and get       .

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changed

to change

to be changed

changing

To get into the habit of smoking means ____ one's own life short.

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to make

makes

making

make

There are some tall trees in our campus, some ________ more than forty meters.

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measure

measured

measuring

to measure