单项选择题

Paul is an ______ worker, and rarely does well in examinations. However he often refuses our help.

A．errant
B．erroneous
C．erratic
D．exotic
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单项选择题
The teacher's behavior and the student's response ______ what many people have said about language learning.
A．confine
B．conform
C．consent
D．confirm
单项选择题
Digging the garden with a spade is a very ______ task. I am exhausted after such two-hour's work.
A．industrious
B．manual
C．conscientious
D．laborious
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