Chuyển đổi câu mà không làm mất nghĩa giúp mình với ạ 1.It was only his full cooperation that led to the burglars' arrest (Would) 2.It was far form obvious why they began tu argue fiercely (apparent) 3.Sales have dropped considerably over the past few month (Decrease) 4.We never questioned her ability to run the department(moment)