There is ( )“a” and( )"n" in the word "and" A.an an B.an a C.a a D.a an

There is a bed,( )and( ) there is a key and a book there is a desk and two chairs ( )the desk,there is a ( )and some ( ). there is a pencil-case and some is there a health and safety committee There is a lot to see and do there There( )(is/are)a cat and (There( )(is/are)a cat and ( )(a/an)elephant There is a mother and a father还是There is a mother and father The roof is a triangle. And there is a（ ） it's( )And there is a(it's( )And there is a( ) on her face There is a pen and a pencil 还是There are a pen and a pencil Look there!He ____my sister.A is B is and C and is D is with and there is more there is 还是 there are? There ( ) a teacher and a child. 是,There are a lamp and three vases,还是There is a lamp and three vases? there are some shops and restaurants.there is a supermarket and a park too 的英文 This is a pen,and ____is a pencil over there