请选择ABCD9i0V-nMs John son wants us _________Exercise1, but you let us _________Exercise 4.;F/i+u+w3O6y
A.to do;to do;F/i+u+w3O6y
B.to do;do;F/i+u+w3O6y
C.do;do;F/i+u+w3O6y
D.do;to do;F/i+u+w3O6y