You’d better put these documents in a safe

You ought to know better than ______ yourself in unnecessary expense.A．to involveB．involve

听力原文：M: May I watch what you are doing？W: Sure. You make a hole, put in the seed, cove

When underway in a channel，you should if safe and practicable （).A.stay near the middle of

You‘d better put these documents in a safe place.A.secureB.darkC.guardedD.banned

While lending money, you must put all of the following in your documentation EXCEPT ______

In fine days you’d better open windows to ven