根据中文意思完成句子。
1. 放学后咱们一起去游泳吧!
________ together after school.
2. 我一到上海就给你打电话。
I'll call you ________ I arrive in Shanghai.
3. 妈妈在厨房里忙着做饭。
Mom ________ in the kitchen.
4. 天要下雨了,你出去时最好带上雨伞。
It's going to rain, ________ take an umbrella with you when you go out.
5. 她对音乐太感兴趣了,让她停止练琴是不可能的。
She is ________ the piano.