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【英语模拟题】
13. That was so serious a matter that I had no choice but ______ the police.
A. called in B. calling in C. call in D. to call in
14. ______ as it was at such a time, his work attracted much attention.
A. Being published B. Published
C. Publishing D. To be published
15. At first, the speaker was referring to the problem of pollution in the country, but halfway in her speech, she suddenly ______ to another subject.
A. committed B. switched C. favoured D. transmitted
