根据首字母及句意补全单词
1. She d_____ to take a long vacation.
2.I have to b_____ my little sister this afternoon.
3. Amy is an active girl .She is o_____.
4. They are twin sisters. They also have some differences, t_____.
5. Some students exercise once or t_____ a week.
1. decides 2. babysit 3. outgoing 4. though 5. twice