7.1.
1. she has broken her leg.
2. the bus fear has gone up.
3..... has improved.
4. he has grown the beard.
5..... has arrived.
6. the temperature has fallen.
7.2.
2. l have just seen her.
3. he has already left.
4. l haven't read it yet.
5. she has already seen this film.
6. they have just arrived.
7. we haven't told him yet.
7.4.
2. been
3. gone
4. gone
5. been