选第一个吧.
only放句首的时候,主句要倒装,所以第二个空是“is he allowed”,排除3和4,而从句不需要倒装,所以选择第1个.
only after---his homework---to watch tv,
only after---his homework---to watch tv,
only after---his homework---to watch tv
1he has finished,is he allowed
2has he finished,is he allowed
3 finished,is he allowed,he is allowed
4has he finished ,he is allowed
only after---his homework---to watch tv
1he has finished,is he allowed
2has he finished,is he allowed
3 finished,is he allowed,he is allowed
4has he finished ,he is allowed
英语人气：115 ℃时间：2019-12-07 05:14:44
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