是时候上床睡觉了。

It's time to ___go ___to ___bed.

我明天要坐飞机去上海。

I'm flying ___to Shanghai tomorrow.

我把钥匙给了我的室友。

I gave the keys ___to my roommate.

这是通往公园的近路。

This is the shortcut ___to the park.

他想要学习游泳。

He wants ___to learn how ___to swim.