When you go by train, make sure you take an express,          stops only at big stations.
       A．one                    B．one that              C．that                    D．what

_____ for the timely investment from the general public, our company would not be so thriving(兴旺的) as it is. 
A. Had it not been      B. Were it not     C. Be it not    D. Should it not be

_____ your opinions are worth considering, the committee finds it unwise to place too much importance on them.
A. As        B. Since        C. Provided        D. While

 One of the requirements for a fire is that the material ____ to its burning temperature.
A. is heated     B. will be heated      C. be heated       D. would be heated

 As we all know, apples are sold by ______ weight, and socks are sold by _______ dozen.
    A. the; a                    B. /; a                C. /; the                     D. the; the

            , the mountain climbers conquered Mount Qomolangma in the end.
       A．As the difficulty was great   B．Great as the difficulty was
       C．Great difficulty as it was    D．The difficulty was great

She comes to school every day        it rains heavily.
A. besides        B. except for     C. except that    D. except when

--Tom, you feed the rabbit today,       ?    --But I fed it yesterday.
    A. do you         B. will you       C. didn’t you    D. don’t you

- Tom, I'm afraid I can't go to the picnic with you.   -But you ___ me you would.
      A. had told        B. have told       C. told               D. tell

 ---What's the matter with Jane? She has been sitting there for hours.
    ---A letter from her mother     an attack of home sickness in her.
   A. set out                   B. set off             C. sent off               D. sent up