[ Grammar ]
By the time he retired, he ________ for this company for more than twenty years.
A. is working
B. has been working
C. was working
D. had been working

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A. action verb
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She ______ a stomachache after eating too much fast food last night.
A. has
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What does Mike____ in the letter?
A. say
B. talk
C. speak
D. tell
