=>
I/
1. D /ʌ/ còn lại /aʊ/
VII/
6. considerably
-> change là động từ -> cần trạng từ
X/
11. Mary has no difficulty in taking morning exercise regularly.
-> have/has no difficulty in Ving ~ find it easy to V
12. I was not used to talking to him in a friendly way yesterday.
I found it difficult to talk to him in a friendly way yesterday.
-> be used to Ving : quen làm gì