2) She broke her leg.
3) She has improved her English.
4) He grew it.
5) I received this letter.
6) The price went up
Объяснение:
Если понятней могу написать так:
1) He has lost his key.
2) She broke her leg.
3) She has improved her English.
4) He grew it.
5) I received this letter.
6) The price went up.