is,are,was,were,willbe,aregoingtobe,have,has,hadThebeautiful________somethingthattheinnocent________notalwaysabletoappreciatefully.
is、are
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The manager fulminated against his secretary, ________ surprised me.
The twins had been away for such a long time that many people in the village thought they ________.
is, are, has, have, having The average British family, which ________ smaller and richer than 50 years ago, ________ 3. 6 members.
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埋弧自动焊工艺的焊接电压是决定____的主要因素,焊接电源是决定____的主要因素。
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