—Where is my dictionary? I remember I put it here yesterday. —You ______ it in the wrong place.

In order to do something meaningful, it’s necessary that you _______ determine what is really important.

—Tom, your foreign teacher speaks Chinese fluently!—Oh, she has lived in China for six years, otherwise she _______ such good Chinese.

The meeting is not over, and you____ not leave.

If you ______ firm action to deal with it at once, you wouldn’t suffer heavy losses tomorrow.