Tolong dibantu tugas bahasa inggris saya no 1-4

1. Chemitry is studied by people at this university
2. English is being studied by us now
3. English was studied by them at primary school
4. This time last week English was being studied by us
5. this (tulisan gak kabur) has been studied by the for 3 years

Semoga membantu, tetap semangat
Jkira