Great changes __________ in our country since 1978.(take pla

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Great changes __________ in our country since 1978.(take place)

填 have taken place
since 1978 意思是：自从1978年以来
这是现在完成时的标志
再问： I __________ my daughter since last month. (hear from) When I got home, I found that my room __________ breaksintosand a lot of things __________. (steal)
再答：第一题填：haven't heard from hear from 是短暂性动词，和since last month 连用，必须用否定形式。意思是：自从上个月以来我就没有收到女儿的来信。第二题填 was broken into 和 were stolen 两个空都用被动语态。意思是：当我到家时，我发现有人闯入我的房间，很多东西被偷了。

Great changes __________ in our country since 1978.(take pla There have been great changes in our country since 1990. There ___has been_______ great changes in our country since There____great changes in our country since 1979 There _____(be) great changes in our country since 1979.谁若知道 There ______(be) great changes in our country since 1979.用所给 Great changes______ in our country since 1980. There great changes in our country.(填空题) Since 1980s,our country have great changed.=Great changes ha There have been great changes in our city since 1978.have be There（be）great change in our country since 1979 great changes take place since liberation 和 Great changes ha