英语问题、在线等待

Mary is interested in playing the piano.
Mary is good at playing the piano.
2）
Apples and oranges come from trees.
Apples and oranges are from trees.
3）
Trees make the air cool and clean.
trees make the air fresh.
4）
Some animals are not safe now.
Some animals are in dangrous now.
5）
He expressed his thanks for her help.
He showed his thanks for her help.

其实就是同意句！·

1) Mary likes to play the piano (because she thinks it's interesting)

2) apples and oranges grow on trees

3) the air is cool and clean because the trees can help to make it to.

4) Not all animals are safe these days.

5) He was being grateful for her help.

Mary likes playing the piano.
Apples and oranges are from trees.
trees cool and clean the air.
some animals are dangerous now.

He thanked her for her help.