The problem ________ when the students refused to do their homework
arose B
aroused C
rose D
raised 2
When he suddenly ________ up the subject of genetic engineering, there was an embarrassed silence
took B
brought C
showed D
came 3
________ so many people in the United States been out of work as today
More than ever before B
In the past, there have never C
Never before have D
Formerly, there never were 4
It ________ as a shock to realize that I was not alone in the room
came B
appeared C
arrived D
reached 5
Since William had been seriously ill for several months, his parents were worried about ________ to return to school full-time
he wanted B
he wanting C
him to want D
his wanting 6
The association is ________ to raising funds to help the blind