题目内容

The most important for us now is to _____what is to be done next.

A. allow of
B. reflect on
C. feel like
D. remind of

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It is best to _____ wear through friction in designing the parts of every machine.

A. have insight into
B. come up with
C. allow for
D. reflect on

Good habits of living have proved to be of much _____ to our health.

A. barrier
B. benefit
C. immunity
D. commitment

Now that we have learned to see things _____, we can find that there are two sides to anything in the world.

A. in part
B. from a perspective
C. on their part
D. in perspective

As a(n) _____ job, it requires much time and commitment and persistence.

A. unwilling
B. demanding
C. embarrassing
D. frustrating

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