Câu hỏi:Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
I'd advise _________ your tickets well in advance if you want to travel in August. A. buying B. to buy C. buy D. bought
Advise sb to V: Khuyên ai làm gì
Advise + Ving: Khuyên làm gì
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