问题
________ confidence in yourself is the biggest barrier _______ greater progress in your work[ ]
A: Lacking of; to making
B: Lack of; to make
C: Lack of; to making
D: The lack of; to make
B: Lack of; to make
C: Lack of; to making
D: The lack of; to make
正确答案是：
同类题型
this medicine, if ________, will certainly dodamage to your health, as the doctor advises
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