At present ________ of the experiments ________done in labs after the new building has been finished.
A.four fifth; is | B.four fifths; are |
C.four fifth; are | D.four fifths; is |
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At present ________ of the experiments ________done in labs after the new building has been finished.
A.four fifth; is | B.four fifths; are |
C.four fifth; are | D.four fifths; is |