He told at a ________that there was something wrong with that machine.
A. glimpse
B. glance
C. look
D. sight
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They went to see a ________dance performance last night.
A. graceful
B. gracious
C. greedy
D. grateful
She is very angry and ________ on him.
A. hangs about
B. hands back
C. hangs on
D. hangs up
The United Nation's ________is located in New York City.
A. center
B. chamber
C. headquaters
D. settlement
In the meeting, they had a ________discussion on the report.
A. heat
B. heated
C. heating
D. heater