Bonjour !
Exercice 4 :
a. Tom has run to school. => He is tired now.
b. They have missed the bus. => They are late now.
c. Sam has passed his exam. => He is happy now.
d. We haven't eaten anything. => We are hungry now.
Exercice 5 :
b. She can speak English => She has lived in Australia.
c. I am very sorry => I have forgotten your birthday.
d. The baker's closed => He has sold all his bread.
e. Tom can watch TV. => He has finished his homework.
J'espère t'avoir aidé. Bon courage !