單項(xiàng)選擇題There are many cities()very fast.

A.expanding
B.expands
C.expanded
D.expand


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1.單項(xiàng)選擇題Civil war or regional conflicts also cause disruption,()people out of rural areas.

A.drives
B.drove
C.driving
D.driven

2.單項(xiàng)選擇題This growth,()mainly in Southeast Asia and Africa, has dramatic consequences.

A.happens
B.which is happening
C.which happening
D.which happened

3.單項(xiàng)選擇題Sixty million people who()in rural areas are moving to cities every year.

A.lived
B.lives
C.living
D.live

4.單項(xiàng)選擇題I spent most of my money in the first week and()had very little for food at the end of the holiday.

A.since
B.however
C.moreover
D.consequently