---Is this car secondhand? ---On the contrary, it is ______ new. 

—Peter and I quarreled last night again.—You know, frequent quarrel doesn’t ______ in a happy marriage.

The paper studies some _______ cases in which something somehow wrong leads to the miscommunication, so that English teachers may improve their teaching.

— How much influence will your time in high school have on the rest of your life?— It ______ be quite a lot, or perhaps only a little. 

Doubting that the traveler carried drugs, the Customs officer stopped him and _______ his suitcase, but found nothing at all.