Is      necessary to complete the design before National Day?

A.this          B.that        C.it       D.he

Is      necessary to complete the design before National  Day?

A. this        B. that       C. it           D. he

 Is __________ necessary to complete the design before National Day?

   A. this      B. that      C. it      D. he

Is ____ necessary to complete the design before National Day?

A. this  B. that　  C. it　  D. he　

Is ____ necessary to complete the design before National Day?

A. this  B. that　  C. it　  D. he　

5.Is ____ necessary to complete the design before National Day?

A. this            B. that　         C. it　        D. he　

Is ____ necessary to complete the design before National Day?

A. this               B. that　           C. it　        D. he　

Is________ necessary to complete the design before National Day?

A. this　　 B. that　　 C. it　　　 D. he

Is ____ necessary to complete the design before National Day?

A. this　　　 　　   B. that　　　        C. it　　　　　　      D. he