我需要回答所有問題嗎？

Do I have to answer all of the questions?

Must I answer all the questions?

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
2 需要 xūyào
  1. to need; to want; to demand; to require
  2. needs
3 回答 huídá
  1. to reply; to answer
  2. reply; answer
4 所有 suǒyǒu
  1. all
  2. to have; to possess; to own
5 問題 wèntí
  1. question
  2. problem
  3. issue
  4. topic

classifier: 個
=6 嗎 má (coll.) what?
=6 嗎 mǎ used in 吗啡 mǎfēi
=6 嗎 ma (question particle for "yes-no" questions)