用a,an填空.1.This is( )book.2.That is（ ）orange.3.It is ( ) English book.4.What is this?It is ( )pen.5.It is ( ) quilt.

用a,an填空.1.This is( )book.2.That is（ ）orange.3.It is ( ) English book.4.What is this?It is ( )pen.5.It is ( ) quilt.
用a,an填空.
1.This is( )book.
2.That is（ ）orange.
3.It is ( ) English book.
4.What is this?
It is ( )pen.
5.It is ( ) quilt.

用a,an填空.1.This is( )book.2.That is（ ）orange.3.It is ( ) English book.4.What is this?It is ( )pen.5.It is ( ) quilt.
1.a
2.an
3.an
4.a
5.a

1.a
2.an
3.an
4.a
5.a

1。a
2.an
3.an
4.a
5.a