When ______ the reason for their success, the kids had two explanations: hard work and the

The car _______ halfway for no reason.

The direct reason for specialization is______.A．the development in scientific activitiesB．

The reason why people put on weight at work is that______.A．their living standards are imp

Paragraph 2__________A.The reason for the increas

Paragraph 3__________A.The reason for the increas

Paragraph 4__________A.The reason for the increas