23、After studying in a medical college for five years, Jane ______ her job as a doctor in the countryside.
A．set out B．took over C．took up D．set up
22、Many people agree that_______ knowledge of English is a must in_______ international trade today.
A．a; 不填 B．the; an C．the; the D．不填；the
21、It’s strange that they _____ nothing about this matter.
A．should know B．would know C．had known D．knew
20、Yesterday my teacher said to my father with much regret, “Should your son make what his
teachers teach _____, he would do much better in his studies.”
A．him B．his C．himself D．them
19、—Well, I forgot to bring my dictionary here yesterday.
—Oh, actually you___it here, for dictionaries were not allowed to use here yesterday.
A．needn’t bring B．needn’t have brought
C．didn’t need to bring D．don’t have to bring
18、----What’s happened to George?
----I don’t know．He ________.
A．must have got lost B．may have got lost
C．should have got lost D．can’t be lost
17、The river beyond our school has become clean again as new measures are ______ to prevent it ______ any further.
A．taken; polluting B．taking; being polluted
C．taken; being polluted D．taking; to be polluted
16、–-Where did you put the car keys?
--Oh, I _______ I put them on the chair because the phone rang as I _______in.
A．remembered; come B．remembered; was coming
C．remember; come D．remember; was coming
15、You have no idea how she finished the relay race with her foot so much.
A．to wound B．wound C．wounded D．wounding
14、I don’t remember how many years ago ______ people began to grow crops.
A．it was when B．it was that C．was it when D．was it that