Viết lại các câu sau (dùng câu khẳng định)

Bài 1  : Viết lại các câu sau (dùng câu khẳng định )
1.The child is crying because his mother isn't here 
= if his mother .............................
2. I got a ticket because I drove too fast.
= if I hadn't............................
3. It is raining, so I won't go with you 
= if it wasn't ..............................
4. I didn't buy this coat because I didn't have enough money.
= if I had ....................................
5. Mảy didnn't pass the final exam because she didn't study hard.
= if Mary ................................