选择用a 或按 来填空 this is ( ）good bookit is ( ）eraser（ ）red book is good( )"a"is in the word"name"i have( )map把下列单词组成句子an is this orangethis english whatis inplease it spell

选择用a 或按 来填空 this is ( ）good book
it is ( ）eraser
（ ）red book is good
( )"a"is in the word"name"
i have( )map
把下列单词组成句子
an is this orange
this english whatis in
please it spell

选择用a 或按 来填空 this is ( a）good book
it is ( an）eraser
（ the）red book is good
( an)"a"is in the word"name"
i have(a )map
把下列单词组成句子
this is an orange
what is this in English?
spell it,please.