2)- If my friend needs my help, I will help him/her. 3)- If my friend phones me at six o'clock in the morning, I'll answer him. 6)- If my friend has a problems with Mathematics, I will help him/her. 7)- If my friend leaves my school, I'll leave with him/her (но тут(в 7)я не уверена, так будет или нет)