Change the following phrases to possessive form 1.The concert of Justin Bieber 2.The gear of firemen 3.The love of his father 4.The effect of the typhoon 5.The parents of Janet and Jessie 6.The reports of the doctor and the therapist 7.The skill of the mountain climbers 8.The client of Atty. Romero 9.The class of Ms. Yutuc 10.The courage of the heroes ​