$1.$ Mary is not young enough to join pen-friend clubs.

- S + tobe + (not) + adj + enough + to V: Đủ/ Không đủ để làm gì.

$2.$ I apologize to you for being rude to you yesterday.

- apologize to somebody for doing something: xin lỗi ai vì làm gì.

$3.$ I saw Jane who was standing at the bus stop.

- "who" là đại từ quan hệ thay thế cho "Jane".

$4.$ She gets on well with most people.

- get on with someone: có mối quan hệ tốt đẹp với ai đó.

$5.$ D. Before you going camping or fishing.

- Before + V-ing: trước khi làm gì.

1 Mary is not young enough for join pen-friend clubs

2 I apologize to you for being rude to you yesterday

3 I saw Jane who was standing at the bus stop.

4 .She gets on well with most people

5 D. Before you going camping or fishing