I/ Điền từ thích hợp vào chỗ trống:
1. There are seven days in a ............. .
2. Monday is the ........... day of a week.
3. The second day is .......... .
4. The third day of a week is ............ .
5. Thursday is between ............... and ............ .
6. .............. is between Fridayand Sunday.