根据句意及首字母或汉语提示完成单词。
If you go to the park in summer, you will enjoy v            flowers.
Tom，please throw the rubbish into the         （垃圾桶）.
You can’t see the words on the blackboard clearly. I can’t，e      .
If you agree with me，n       your head.
The students were s      the floor when Mr Wu came in.
The financial crisis (金融危机) made a great change to Americans’ e             lives.
With the help of my teacher , I have made great ________(进步)in this term.
To tell you the ______(true), I felt sad when I missed the chance.
The police think the man in red is one of the ___________ (rob)
Our planet, Earth is becoming more and more crowded and _________ (pollute).
The teacher told us that light__________(travel) much faster than sound.
It’s necessary for us ______________(do)some exercise before the final exam.
We _____________ (run) outside when you called us at this time yesterday.
---Why not ________(buy) a toy car for your son .
---Good idea. He must like it very much .
Linda spends as much time as she can _____________(practice) reading English.