----I’m sure Kim will win the first prize in the final. -----I think so. He ______ for it for months. A .is preparing B. was preparing C. has been preparing D. had been preparing
A.
is preparing
B.
was preparing
C.
has been preparing
D.
had been preparing
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【简答题】Which of the following is true according to the text? [ A] The 2006 incidence occurred because of the carelessness of a supervisor. [ B ] Yellow liquids in a glove box should always be handled with he...