السلام عليكم و رحمة الله و بركاته ......
سأحاول مساعدتك ....
غالبا عندما يقولك سؤال --rewrit sentence "b" so that means the same as sentanct "a".....
so either u have passive and active voice or direct and indirect speech .... generally but there r exception of course ... cuz sometimes u need to focus very well . so first learn the rules and if u dont find the 2 cases use ur intelligence and try to understand the sentence and turn it or write it in a different way ..... and gd luck
ربي يسهل ان شاء الله ..
بالتوفيق
تحياتي
سلام