单选题 It is difficult for her to make the final decision now, ______she is in a delicate situation.
  • A) if
  • B) unless
  • C) until
  • D) since


【正确答案】 D
【答案解析】[答案精解] 句意:她很难作最后的决定,因为她处境微妙。该题考查的是状语从句。since是“由于,因为”的意思,引导原因状语从句。