Sam is a student. He has only four lessons every day. The following is his school timetable (时间表).
Monday:
8:00 maths
9:00 English
10:00 Spanish
11:00 PE
Tuesday:
8:00 English
9:00 maths
10:00 art
11:00 science
Wednesday:
8:00 English
9:00 maths
10:00 music
11:00 Spanish
Thursday:
8:00 maths
9:00 English
10:00 science
11:00 PE
Friday:
8:00 English
9:00 maths
10:00 Spanish
11:00 art