I ______ Jack ______ playing in the garden at that time.A.think,wasn't B.don't think ,wasn'tC.don't think,was D.think ,is,这几个选项选哪个?

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I ______ Jack ______ playing in the garden at that time.A.think,wasn't B.don't think ,wasn'tC.don't think,was D.think ,is,这几个选项选哪个?

I ______ Jack ______ playing in the garden at that time.A.think,wasn't B.don't think ,wasn'tC.don't think,was D.think ,is,这几个选项选哪个?
I ______ Jack ______ playing in the garden at that time.A.think,wasn't B.don't think ,wasn't
C.don't think,was D.think ,is,这几个选项选哪个?

I ______ Jack ______ playing in the garden at that time.A.think,wasn't B.don't think ,wasn'tC.don't think,was D.think ,is,这几个选项选哪个?
I (don't think) Jack (was) playing in the garden at that time.
我认为杰克在那个时候并不在花园里玩.
主句的think要用否定式,宾语从句是过去进行时态.
所以正确答案是C项.

C
要注意几点,think是否定前移,所以否定用don‘t think
再而此句子分主从句两句,at that time过去进行时,是后面从句的时态
谢谢,望采纳