帮小妹做一下英语单选题吧,

帮小妹做一下英语单选题吧,
1 I don”t think I can ever＿＿my teachers for their devoted work,but I can in my turn to my best for my students
A repay B interrupt C respond D witness
2 The conference was an attempt to＿＿discussion of the problem of widening gaps between the rich and the poor
A stimulate B conduct C intend D uncover
3 The lawyer outlined the case to him,being careful not to＿＿anything important
A save up B cut through C leave out D take out
4 The clerk held my passport four inches from his face and＿＿to read it
A affected B flipped C strained D giggled
5 The wounded woman got to her feet and make a＿＿at the kitchen knife at the sink
A grab B click C comment D pat
6 The designers made the most＿＿water gardens to match the houses,with canals,fountains and cascades
A casual B elaborate C fruitful D frantic