如题所述
his mother was out.so he( has to )look after his younger brother。
他的母亲是出去。所以他(现在)不得不照看他的弟弟。
his mother was out.so he (had to) look after his younger brother。
他的母亲是出去。所以他(过去)不得不照看他的弟弟。
你要的是现在的影响,“他(现在)不得不照看他的弟弟。”没空跟你玩!
我也选的是c,但答案是b呀,我错啦!