have you get into the habit of _____every morning

题目

have you get into the habit of _____every morning
a.practise self-talk b.practising self-talk c.do practising d.to practise

答案

b
介词of的宾语不能是动词原形或不定式短语,排除a和d,以及c.而动名词短语可做介词宾语.