---I don’t think _______ Maths is easy.
A. that B. if C. whether D. why
---Thanks for _________ the new chairperson.
A. recommend me as B. recommending me as
C. recommend me to D. recommending me for
--- He couldn’t hide his __________ at my success and said bad words about it.
A. envy B. wisdom C. purity D. power
--- Are you going to __________ this challenge?（挑战）
A. take up B. take down C. take off D. take on
---The boy looks nice ________ white and the red sweater looks good ________ the girl.
A. with； on B. in； on
C. on； in D. in； with
--- We just need one of you for the game. ________you _______your brother can join us.
A. Both； and B. Neither； nor
C. Either； or D. Not only； but also
