某职工食堂每天烧煤354千克，一星期可烧煤多少千克？
一星期=7天，
354×7=2478（千克）；
答：一星期可烧煤2478千克．
Read and write．快帮大头蛙 完成下列句子吧！
1. I want to buy a new pair of (袜子).
2. Would you like (一些) juice ?
3. This bag is (太沉了).
4. They (玩) basketball yesterday.
5. There are many (运动员) in a team.
商业汇票分为（）和（）两种。
完成下列句子吧！