I will be back in ___ A.half a hour B.a hour C.a hour and half D.half an hourThe ( ) Lesson is easier than this lesson( )A.five,six B.fifth ,sixth C.fifth ,six D.five ,sixthshe lives in ( )A.206 Room B.206 room C.Room 206 D.Rooms 206

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Iwillbebackin___A.halfahourB.ahourC.ahourandhalfD.halfanhourThe()Lessoniseasierthanthislesson()A.fiv

I will be back in ___ A.half a hour B.a hour C.a hour and half D.half an hourThe ( ) Lesson is easier than this lesson( )A.five,six B.fifth ,sixth C.fifth ,six D.five ,sixthshe lives in ( )A.206 Room B.206 room C.Room 206 D.Rooms 206
I will be back in ___ A.half a hour B.a hour C.a hour and half D.half an hour
The ( ) Lesson is easier than this lesson( )
A.five,six B.fifth ,sixth C.fifth ,six D.five ,sixth
she lives in ( )
A.206 Room B.206 room C.Room 206 D.Rooms 206

D,half an hour

D.half an hour
我会在半小时内回来

A中的a 应为an, BC中也是这种情况,所以选D

补充：要表示顺序时，如果序数词在主体词的前面则用序号，后面就用数词，所以分别选：C/C

i will be back in touch, I think he will be back_ in an hour _对划线部分提问 __ __ you think he will be back “I will be back! I f everything __ __ __ the plan,(一切按计划进行),I will be back before the dark soon i will be back in your arms I will be back in a couple of I will be back in a matter of hours. i will be back in touch,什么意思 I will be back in three days.为什么要有be 为什么不是I will back in three days. i will be back soon i will be coming back I will be back,from I will be back,We will be back i will be back为什么要be they will be back in two weeks 对划线部分提问 __ __they be back?——————划线部分是 in two　weeks I will be back in a minute.back不是动词吗?为什么前面还要加be呢? I hope i will be back in a week.同意句是什么? He will be back in four days