[استاذ بدوى الدجوى]

He was made ( do - to do - doing - to doing ) all the work alone
do / to do
الاتنين صح

he travelled to Giza and he didn't come back ( has )

He has gone to Giza
He has been in Giza
الاتنين صح


he talks all the time ( always )

He always talks
هى كده صح

He was responsible for designing abig company
He did the designing for a big company
الجملة الاولى مش محتاجة اى حرف جر
محمد استخدم design كفعل وده لا ياخذ حرف جر

بس كده تقريبا
شكرا لكم
الله تعالى اعلم