A. am B. be C. is D. are
A. both the singer and the dancer B. Either the singer or dancer C. The singer or dancer D. The singer and dancer
A. has B. have C. had D. is having
A. has argued B. has been arguing C. have argued D. have been arguing
A. are believed B. had believed C. has believed D. believe
A. is B. are C. have been D. has been
A. goes; have B. goes; has C. go; has D. go; have
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