一、用正确的a和an填空.
1、（ ）cat can catch mice.
2、The ant is ( ) insect .
3、Lucy spends ( )hour doing her home work everyday .
4、Bob's father is ( )engineer .
5、John is ( ) honest boy .
一、用正确的a和an填空.
1、（ ）cat can catch mice.
2、The ant is ( ) insect .
3、Lucy spends ( )hour doing her home work everyday .
4、Bob's father is ( )engineer .
5、John is ( ) honest boy .