Bộ ôn tập Từ cùng trường nghĩa môn Tiếng anh có đáp án (Part 11)

Their biggest ______ to finishing the project was the difficulty in finding enough local craftsmen to carry out the work. A. affair B. obstacle C. problem D. matter

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Their biggest ______ to finishing the project was the difficulty in finding enough local craftsmen to carry out the work.

affair

obstacle

problem

matter

Giải thích

Chọn B