E-mail, as well as telephones, _____ an important part in daily communication. [

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E-mail, as well as telephones, _____ an important part in daily communication. [ ]
A. is playing
B. have played
C. are playing
D. play

答案

举一反三

Three-fourths of the surface of the earth ____ sea. [ ]
A. is
B. are
C. were
D. has been

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When and where to build the factory ___ yet. [ ]
A. is not decided
B. are not decided
C. has not decided
D. have not decided

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Each soldier and sailor ____ a rifle.[ ]
A. are given
B. was given
C. being given
D. were given

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The old ____ taken good care of in our country. [ ]
A. is
B. has
C. are
D. have

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My clothes ____ made to order. [ ]
A. is
B. are
C. has
D. have

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