1. Dave is seriously stressed because he can't study as well as his classmates.
   → **Dave is feeling immense pressure because he can't keep up with his classmates' studies.**

2. The director offered him a good job, but he refused.
   (keep)
   → **The director offered him a good job, but he turned it down.**

3. My sister can't decide which university to study.
   (to)
   → **My sister can't decide which university to go to for her studies.**

4. "I went to Da Nang last year, but I didn't visit Ba Na Hills," said Rossie.
   → **Rossie said that she had gone to Da Nang the previous year but hadn't visited Ba Na Hills.**

5. She shared with her mother about her problems at school, but she didn't feel better.
   → **She didn't feel any better after sharing her school problems with her mother.**

.