[ Grammar ]
A wildlife expert is scheduled to give a talk on the _________ that the factory has had on the surrounding forest.
A. Components
B. Degree
C. Requirements
D. Impact

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Modal Verbs › ViewStudents __________ participate in the school assembly tomorrow.
A. must
B. mustn’t
C. might
D. ought
Grammar › View
Workers always ___________helmet for safety reason.
A. Wears
B. wear
C. don’t wear
D. doesn’t wear
Tenses › ViewOuch! I ……………….. my finger!
A. ‘d cut
B. cutted
C. cut
D. ‘ve cut
Grammar › View
Maria told her dog to ____ on, and wait for food.
A. keep
B. hold
C. touch
D. stay
