根据汉语意思完成句子。
1.南方学生的暑假比北方学生的暑假长。
South students have _________weeks__________in the _________than North students.
2.英语和科学你更擅长哪一科?
Which subject are you ________ _________, ___________ or _________?
3. 我们学校的学生数越来越少。
The number of the students in our school _______ becoming _______ and ______.