等火车的时候，时间过得特别慢。

　　Time _____ _____ so slowly when you _____ _____ _____ a train．

等你来了，我再走。

We ________ leave here ________ you come.

等大家坐下后你再开始吃。

________ ________ everyone to sit down ________ you begin to eat.

在等比数列{a_n}中，若a₁₀＝0，则有等式
a₁＋a₂＋…＋a_n＝a₁＋a₂＋…＋a_19－n(n<19，n∈N^*)成立．类比上述性质，相应地，在等比数列{b_n}中，若b₉＝1，则等式______________成立                

 

1. Please __________ _________ (等待) me at the school gate.

2.They are__________ __________(听…) the music in the classroom now.

3. Please come to school __________ _________. (按时)

4. Tom usually __________ _________ (去游泳) on Saturday evening.

5. There is a hospital__________ __________（在……对面）the bank.