请选择ABCD*z1f2c5o0O4s+p'h1w __________look__________the blackboard.7{)u0w/r1q9y/k4O0I6c;].~*s4i;w
A.Let, at7{)u0w/r1q9y/k4O0I6c;].~*s4i;w
B.Let’ s, at7{)u0w/r1q9y/k4O0I6c;].~*s4i;w
C.Lets, like7{)u0w/r1q9y/k4O0I6c;].~*s4i;w
D.let, on7{)u0w/r1q9y/k4O0I6c;].~*s4i;w