NEW MACHINES ... USED ON THIS FARM NOW.A. HAVEB. ARE BEINGC. BEING...

11. - 3500 CAU TRAC NGHIEM ON TAP AV THCS

3500 CAU TRAC NGHIEM ON TAP AV THCS

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11. New machines ... used on this farm now.

a. have

b. are being

c. being

d. was

 b