wpf实战项目课程:用动词的适当形式填空
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1.You must try ___ (explain) yourself more clearly; it is impossible__(understand)what you are trying___(say).
to explain
to understand
to say
1.You must try _to explain__ (explain) yourself more clearly; it is impossible_to understand_(understand)what you are trying_to say__(say).
to explain
to understand
to say