1.She worked __once__ a time in a middle school during those years
2.The musician's success has a lot to do _with__ hard work.
3.Suddenly I realized that I'd had my keys in my pocket all _lost___.
4.They have their reservations __on_ whether the tour will be completed as arranged.
5.There was a woman's screaming voice rising _after__ the barking.
6.Scientists will have to come up _with__ new methods of increasing the world's fresh water supply.
7.She asked her secretary to take care _of__ the travel arrangements.
8.Instead _of__ congratulations on our success in beating the strong team, our coach demanded that everyone in our team be well prepared for our subsequent games.
9.They cannot accept that I should speak _on__ their behalf without first asking each of them what they think.
10.I felt pained not being able to do anything __on_ your behalf.
除了第四个,其他的可以确定.
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