英语：完成句子（初二）
1、确保人人玩得高兴
_____ _____ everyone has a good time.
2、总之,我们应该努力学习
_____ _____ we should study hard.
3、在杯子的底部有一些茶叶
There is some tea _____ _____ _____ _____ the cup.
4、在危险中,保持冷静是重要的
Tt is inportant to _____ _____ when we are in danger.