李明设计了下面四种正多边形的瓷砖图案，用同一种瓷砖可以平面密铺的是

A.①②④

B.②③④

C.①③④

D.①②③

单词拼写。

1. It is the s  ____   the two trucks collided.

2. Although Bill was going to the movies, he told Jack to the c____.

3. Do you remember the s_____in the play where Susan meets Alan for the first time?

4. In order to keep his money safe,  he opened an _____( 帐户)with the bank.

5. With nothing to do, he just ____ ( 漫步) aboutevery day.