22. Advertising is distinguished from other forms of communication _____ the advertiser pays for the message to be delivered.
A. in that
B. in order that
C. in which
D. in the way
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23. If either Tom or Betty _____ ,he or she will help me with my questions on English.
A. come
B.came
C. comes
D. has come
24. Our teacher recommends that we _____ as attentive as possible when we visit the museum.
A. are
B. shall be
C. were
D. be
25. Only when you have acquired a good knowledge of the field, _____.
A. you can pass the exam
B. you passed the exam
C. can you pass the exam
D. you will pass the exam
26. The student's _____ French well helped him a lot in learning English.
A. know
B. to know
C. knew
D. knowing