Have you seen_____watch?I left it here this morning 说是泛指填a 但

Have you seen_____watch?I left it here this morning 说是泛指填a 但 Have you seen_____pen?I left it here this morning Have you seen a ( )pen I left it here this morning.Is it( )b ---Have you seen ( )pen I left it here this morning.---Is it Have you seen ______ pen I left it here this morning .Is it 1.--- Have you seen ____ knife?I left it here this morning. 英语8.-Have you seen _______ pen?I left it here this morning. —Have you seen ________ pen?I left it here this morning. 答案给出来了,1.--Have you seen ( ) pen I left it here this morning （1）　Have you seen ______ pen?I left it here this morning.Is Have you seen ___pencil?I left it on___table this morning. ---------Have you seen ______pen?I left it here this moring.