It is not _____to quarrel with your boss.

A variable pitch propeller is made _____ a boss with separate blades mounted into it.

It is not enough to observe behavior. and ______ them with physiological events that occur

I dont mind______the decision as long as it is not too late.A．your delaying makingB．you to

It is not always possible to foresee the obstacles______ your way towards an ambitious goa

.It is necessary to make clear to the boss______.

It is__________ with the customer not to let the shop assistants guess what he really like