Why can't some farmers find enough workers to pick fruit?

• A、They grow too many peach trees.

• B、People prefer well-paid construction jobs.

• C、Few people want to work in California.

• D、Theydon't want to hire workers from Mexico.

There is only one student_____will surely pass the diffcult test.

• A、whose

• B、which

• C、whom

• D、who

53.