It’s just_____ among countries to host the Olympics as to win an Olympic medal.

Theotherday,Ifoundmybanknote ________Ihadleftsomeweeksbefore. [ ]

With 4G mobile phones, people can even see each other as they talk. —-Really? Would you show me it, please?

It ______ to be seen who will be the victor in the contest.

I argued ________ my good friends yesterday. What should I do?[ ]