摘要：7．To the joy of the parents.their only son is now to achieve his goal. A．making every effort B．making all effort C．make an effort D．sparing no efforts 答案与解析:A 由now可知应用进行时.排除C项,make every effort to do“努力做某事 .make all efforts to do“努力做某事 ,spare no effort to do“不遗余力地做某事 .

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