800 câu trắc nghiệm Điền từ Tiếng Anh có đáp án - Phần 11

This is a (2) _____ normal stage of child development. Babies separate well in the first six months, but soon after that they start to get a crush on Mum and close family (3) _____.

7/35

This is a (2) _____ normal stage of child development. Babies separate well in the first six months, but soon after that they start to get a crush on Mum and close family (3) _____.

perfectly

extremely

very

certainly

Giải thích

D là đáp án đúng