Explications:
Certainly! Here are the completed sentences with the correct words in brackets:
13. Oumy's sister goes to school. **(She)**
14. Bedara and Yama are from The Gambia.
15. This is Abi, she is **(a student)**.
16. We have a big house in Thies. **(It)** is very nice. **(It)** is a studem. **(He/she/her)** live in Banjul. **(He/she/her)** is my cousin. **(He/She)** is very nice.