영작한 문장인데..어법에 틀린부분이요..(c3484님 설명감사합니다)

1) keeping a pet teaches us responsibility.
2) many people are allergic to pet fur.
3) it induces impulsive purchase.
4) we need time to relax because we feel sleepy after lunch.
5) shopping online is convenient
위에 5 문장을 영작했는데요 혹시 어법에 틀린 부분이 있으면 고쳐주세요.................아래....c3484님 설명감사드립니다.........................