（1）—Is Grace your aunt?   

         —Yes, {#blank#}1{#/blank#} (her) is.

（2）Mike and Bob {#blank#}2{#/blank#} (be) friends.

（3）His {#blank#}3{#/blank#} (grandparent) are in Beijing.

（4）These are her {#blank#}4{#/blank#} (sister).

（5）—Are {#blank#}5{#/blank#} (this) your pencils?

         —No. My pencils are not black.

These {#blank#}1{#/blank#} some big apples.

—They are my{#blank#}1{#/blank#}(parent/parents).

{#blank#}1{#/blank#}  {#blank#}2{#/blank#}  {#blank#}3{#/blank#} brother.