21) ____ on a clear day, far from the city crowds, the mountains give him a sense of infinite peace.
A) If walking B) While walking C) Walking D) When one is walking
22) I understood you were third-year students ____ in English.
A) who majors B) who major is
C) have majored D) majoring
23) A cool rain was falling, ____ with snow.
A) mixed B) mixing C) to mix D)shavingsmixed
24) ____ by the police, the kidnappers had no choice but to surrender.
A) Surrounded B) Surrounding
C)shavingssurrounded D) To be surrounded
25)____ equal educational opportunities, American Indians in the reservations remained backward and illiterate for a long time.
A) Deprived off B) Depriving off
C) Deprived of D) Depriving of
26) All the exam papers ____, the teacher sent the class home.A)shavingsbeen handed in B)shavingshands in C) handing in
D) being handed in
27) ____ in 1636, Harvard is one of the most famous universities in the United States.
A) Founding B) It was founded C) Being founded D) Founded
28) There ____ no fresh drinking water and no good farm land, it was not a comfortable place in which to live.
A) be B) was C) were D) being
29) ____ in Beijing for quite a few years, Mr. Park had little difficulty understanding Chinese.
A)shavingslived B) Lived C) Living D) To live
30) Any packet ____ properly will not be accepted by the post office.
A) not to be wrapped B) not being wrapped
C) not wrapped D) notshavingsbeen wrapped
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