1：这张老照片使我们想起了美好的学生时代
The old picture reminds us of our blissful student days.
The old picture brings back memories of the wonderful student days.
picture 和 photo 可以互换
2：你若带着宠物,老师不会让你进去的.
If you bring a pet, the teacher won’t allow you in the classroom
The teacher won't allow you to bring a pet to class
3：我打算这个假期花些时间和我祖父母呆在一起.
I plan to spend part of my holiday just being with my grandparents

满意请及时采纳,谢谢
我是加拿大人,前英语老师.