Question

________ the teacher ________ the students has been to the South Pole．

1. A.
   Both…and
2. B.
   Not only…but also
3. C.
   Neither…nor
4. D.
   /…as well as

Answer 1

D
根據(jù)句中的謂語結(jié)構(gòu)，has been是單數(shù)形式，與the teacher一致．正確答案是D．