We must focus ______ our sales force as the chief means of improving trade.

We must find a way to cut prices______ reducing our profits too much.A、withB、withoutC、de

We only focus ______ our strengths so we are always moving forward.AatBinConDdown

Planning our vocation we must take the frequent______of the weather into consideration.A．t

We must strengthen our _____ on the western border.A) offenseB) defectsC) defenseD) de

Our expenses are too high, we must cut them______somehow.A．downB．inC．upD．out

We must keep away from some _____, for they will do harm to our health.A.chemistryB.