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TWO TONS OF COAL ______ REQUIRED. A. IS B. ARE C....
TWO TONS OF COAL ______ REQUIRED. A. IS B. ARE C. HAVE BEEN D. WER...
NHUNG DE TRAC NGHIEM HAY CO THE THAM KHAO 33 DE TRAC NGHIEM 12 HAY
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25. Two tons of coal ______ required.
a. is b. are c. have been d. were
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25.
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NHUNG DE TRAC NGHIEM HAY CO THE THAM KHAO 33 DE TRAC NGHIEM 12 HAY