______ of gift-giving, barter, buying, and selling goes on among the Navajos.
A great deal
B. A great many
C. Much greater
D. Many
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(Those) of us who move (during) the term should have (their) addresses (changed) at the teacher's office.
A. Those
B. during
C. their
D. changed
I didn't see her in the meeting room this morning. She ______ at the meeting.
A. mustn't have spoken
B. shouldn't have spoken
C. needn't have spoken
D. couldn't have spoken
He left ______ with my secretary that he would call again in the afternoon. He said he would keep ______ .
A. words; his words
B. word; his word
C. word; word
D. the word; his words
The news (coming) from (different) parts of the world (are) often extremely (discouraging) these days.
A. coming
B. different
C. are
D. discouraging