选出不同类的单词。(8分)
( )（1）A.bus B．taxi C．cat
( )（2）A.cat B．kite C．bear
( )（3）A.balloon B．pen C．ruler
( )（4）A.boat B．apple C．ship
( ) The students couldn’t help ________ when they heard the joke.
A. to laugh B. laugh C. laughing
() Do you know ________ this word?
A. what to spell
B. how to spell
C. to spell
( ) Be quiet! The babies ________.
A. sleep B. are sleeping C. slept
() He asked me ________ I would like a cup of tea.
A. that B. what C. if
下面每组单词中划线字母的读音有一个与其他两个不同，请将该单词的标号填入题前括号内。
( )（1） A. take B. bad C. have
()（2） A. fish B. find C. give
( )（3） A. me B. bed C. red
()（4） A. glueB. run C. us