CHUYÊN ĐỀ 2 THÌ ĐỘNG TỪ (VERB TENSES)
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.………., the nation’s capital remained in Philadelphia, Pennsylvania. A. While designing Washington, D.C. B. Washington, D.C. was being designed C. While Washington, D.C. was being design

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.………., the nation’s capital remained in Philadelphia, Pennsylvania.

While designing Washington, D.C.

Washington, D.C. was being designed

While Washington, D.C. was being designed

Washington, D.C. designed

Giải thích

Chọn C