Iwondered________.A.ifhecancomebac

发布时间：2020-07-27 01:46:51

I wondered ________.A.if he can e back on timeB.whether could he e back on timeC.if he could e back on time or notD.whether he could e back on time or not

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D解析whether和if都可以引导宾语从句，但如果在从句中有or not的话，只能用whether引导；另外，宾语从句只能用陈述句语序．
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