根据句意及首字母提示完成下列句子。

1. You should tell your teacher the t _____ earlier.    

2. A _____ is very helpful in the modern world.    

3. When we shop online, the words that sound good sometimes m _____ us.    

4. Mr. Smith _____ (列举) several kinds of books he needed to buy.    

5. Dave's mother _____ (明确地) told him not to play soccer on the street.