She couldn’t _____the manager’s rudeness any longer, so she stood up angrily and left the office right away.
A. put up with
B. catch up with
C. keep up with
D. come up with
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Butterflies _____ a sweet liquid produced by flowers, which bees and other insects also collect.
A. carry on
B. feed on
C. put on
D. focus on
The robbery must have_____ after the staff went home.
A. broken out
B. broken down
C. broken in
D. broken through
The artist discovered his unpublished manuscript written three years ago_______..
A. at random
B. by chance
C. in turn
D. on occasion
That kind of rare birds is _______ threat from crazy and selfish hunters.
A. at
B. on
C. in
D. under