请在第_____处填上正确答案. A) proximity B) popularity C) ambiguity D) utility
请在第_____处填上正确答案. A) Likewise B) Moreover C) Nevertheless D) Therefore
请在第_____处填上正确答案. A) reduction B) recurrence C) surge D) sorrow
请在第____处填上正确答案。 A) Before B) After C) Until D) Since