1.The likely reactions of the market would need to be reflected on before we act.

    2.The agent spoke on behalf of his principal.

    3.How much interest will there be on a principal of $5000？

    4.My wages are the principal source of my income.

    5.If so， your points of view are bound to conflict with his.

    6.The long drawn-out conflict between the employers and workers led to the strike last week.

    7.His original idea was good， but his execution of the scheme was disastrous. 8.I am bound by my promise.

    9.You should hold on to your oil shares.

    10.My expenditure is conditioned by my income.