1: I can’t remember the name of the garage.We had the car repaired at this garage ( using a relative pronoun)
I can’t remember the name of the garage at which we had the car repaired
2: I’m sure that you are exhowsted because you’re been driving all day ( using “must”)
you must bexhausted because you’re been driving all day
3: We didn’t go to holiday bacause we didn’t have enough money.
If we had had enough money, we would have gone to holiday
4: The porter said to me, “ I’ll wake you up when the train arrive in Leeds .( using keported speech)
The porter said to me that he would wake you up when the train arrive in Leeds