[ Grammar ]
A defect can be caused ………….. negligence by one of the members of a team.
A. by
B. to
C. at
D. in

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Verb Tenses and Past Participles › ViewForm a sentence using the present perfect tense.
A. I finish my homework.
B. I finished my homework yesterday.
C. I will finish my homework soon.
D. I have finished my homework.
Grammar › View
Decide if you have to write in the preposition “to” or not.
She said she wanted _______ go to the disco.
A. yes
B. no
C. both possibilities are correct
Vocabulary › ViewThe very center of the coordinate plane, where (0, 0) is located.
A. the beginning
B. the origin
C. the start
D. the epicenter
Grammar › View
They are singing for his birthday.
What type of verb is highlighted?
A. main verb
B. helping verb
