Mary settled in Seattle, _____ she had obtained a master's degree in economics.
A. since when
B. by when
C. since which
D. by then
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She enjoyed her work, which provided a good _____ for her energies and talents.
A. outcome
B. outset
C. output
D. outlet
His father had a ________ life when he was young.
A. suffered
B. cruel
C. bitter
D. little
The newspaper says that the weather is going to_________tomorrow.
A. clear of
B. clear out
C. clear off
D. clear up
The speed of radio waves is equal to ________of light.
A. those
B. that
C. the one
D. the ones