There is( )"x"in the box.

There is( )"x"in the box. there is a 'x'in the word 'box'.单句改错 there is "b"and "x" in the world "box" what is in the box?There is There is nothing in the box. ( )bread is there in the box? There is some--------(chalk) in the box There is some juice in the box There is ( ) old pen in the box There is a X in the word “box” A a B in C the 改错 为什么 There is a "X" in the word “box” A a B in C the 改错 为什么 填a/an/the,1.There is ( )"x"in the word "box"2.( )Shanghai is