—How's this pink evening dress? I wear it to the party _______ shall I choose that white one? —They both look beautiful, but I think your blue dress is suitable.
---Is it good to look up every new word when I come across it in reading?
---No. You ______because you are likely to guess the meaning from the context.
A. can’tB. mustn’tC. don’t have to C. ought not to