(    )3.The boy didn't go to bed _______ his mother come back.

       A.when                       B.because

       C.until                      D.then

 (    )2.I think you should add more salt to this dish.It isn't ______.

       A.salty enough              B.enough salty

       C.sweet enough              D.enough sweet

(    )1.Yesterday I took Daniel's MP4 home ________.

       A.by mistake                B.in mistake

       C.with mistake              D.for mistake

他错把盐放进了她的茶里。

  He ________ salt in her cup of tea _______ ________.

 4.在最后                   _____________________

 3.使顾客开心               _____________________

 2.足够咸的                 _____________________

1.误做某事                 _____________________

  4.The chicken is not s_______ enough. Please add some salt on it.

  3.Lemonade tastes s_________.