Great changes ________ in the past 20 years.

Great changes in the past 20 years. A. took place B. takes place

The past 20 years have seen little changes in the lives and structure of families in Britain.

Great changes___________20 years ago. A: took place B: takes place C: are taken place D: is taken place

Great changes have taken place in that school. It is no longer ____it was 20 years ago.______it was so poorly equipped.

In one day, Sue can change the oil on 20 cars or change the tires on 20 cars. In one day, Fred can change the oil on 20 cars or change the tires on 10 cars. Sue and Fred can gain from trade if Sue changes the ( ) and Fred changes the ( ). A: tires; oil B: oil; oil C: oil; tires D: tires; tires

The passage is based on the author's ______. A: experience of the changes B: admiration of the changes C: analysis of the changes D: hope for changes

Great changes ______in the past 20 years. A: took place B: akes place C: are taken place D: is taken place

Great changes have taken place everywhere in the city. It is no longer _____ it was 20 years ago. A: what B: how C: that D: which

Which changes are we exposed to every day? A: Massive cultural and economic changes B: Massive social and economic changes C: Massive social and cultural changes