请选择DCBA/Y2G+Z:g;z7S7~+O-y7I When I ________ the farm, the children had finished ________ the apples..n.i4P1e)_/U9O
A. reached; picking.n.i4P1e)_/U9O
B. got; picking.n.i4P1e)_/U9O
C. came; picked.n.i4P1e)_/U9O
D. arrived at; to pick.n.i4P1e)_/U9O