For all those years he has experienced the_____of youthful friendship without realizing just how quickly it passes.
A. misery
B. dullness
C. ecstacy
D. notions
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Only the_______branches were still gilded by daylight, the illuminated areas shrinking as the sun dropped below the misty horizon.
A. foremost
B. almost
C. most
D. topmost
The solution works only for couples who are self-employed, do not have small children, and get along _______to spend most of their time together.
A. so well
B. too well
C. well as
D. well enough
________a spaceship far out in the solar system, the Earth would appear as a tiny dot.
A. From
B. That
C. When
D. Where
______the processof photosynthesis, green plants absorb carbon dioxcide and produce oxygen.
A. For
B. Through
C. It is
D. While