Answer:
c. he had worked
Explanation:
Since it is in past tense, the remaining part should be in past
你好，你想知道什么?
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Answer:
In = prefix, -ible = suffix
Explanation:
Prefix comes at the start of a word
Suffix comes at the end of a word
B because A seems like he was resigned because he was doing something wrong but B makes it seem like he was resigned because of his health and they wish him well,
A means the same thing as the English words under the Chinese definition
B means it usually sleeps for 15 minutes at night
C he goes to bed at 10:15 at night
D means he usually goes to be at 10:15 at night
