Since you have come so far with your experiment，you carry it through to the end.
A. may B. might C. may well D. may as well
– Lucy doesn’t mind lending you her dictionary.
-- She ______ . I've already borrowed one.
A. can't B. mustn't C. needn't D. shouldn't
Jack’s ill, so they ______ change their plans.
A. must B. should C. have got to D. ought to
Excuse me, six, Mr. White has arrived. he wait outside or just come in ?
A. Shall B. May C. Could D. Must
My father ______ have a large farm and he liked it very much.
A. would B. used to C. could D. ought to
You ______ see the doctor, Joe. You don’t look very well.
A. must B. shall C. may D. can
