—What do you think your life will be like________ twenty years?

—Yeah.I have thought about it________ three years.

A．before;of

B．after;in

C．in;for

D．for;for

甲、乙二人向同住一旅馆的丙某兜售毒品，遭到拒绝。甲、乙二人强行将丙某绑住，给其注射了一针毒品。第二日，丙某主动上门要求购买毒品注射。甲乙二人见丙某携有大量现金，便心生夺财之念。故意给其注射大剂量毒品，致丙某昏迷。乘机掠走丙某身上的现金。甲乙二人构成何罪()

A、强迫他人吸毒罪

B、盗窃罪

C、贩卖毒品罪

D、抢劫罪