2000 câu trắc nghiệm tổng hợp Tiếng Anh 2025 có đáp án (Phần 39)

When I was at _____ school, we had to wear _____ shorts until we were _____ 11 and then we were allowed to wear _____ pair of long trousers.

Giải thích

x – x – x – a