题目内容：

完成句子

1.This time they decided __________________ (乘船旅行）

2.We are going to buy Tim a nice present __________________ (在我们回家的途中）

3.He promised to wait for me__________________   (在......中心）the town.

4.Tom ______________(第一次飞行）when he was five.

5.Mike _______________ (被选为）our monitor yesterday.