[ Tenses ]
Not until Trang ______ the labour market was she aware of the importance of being patient.
A. enters
B. has entered
C. had entered
D. is entering

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Subordinate ConjunctionsPresent Perfect ContinuousA(n), the, no articlePossessive Adjective and PronounNounSubject Verb Agreement and Verb TensesPast Simple and Past ContinuousWish SentenceSimple Present Tense vs Present Continuous TensePassive Modals, Impersonal PassiveOther quiz:
Comparisons › ViewI am very busy now. Can you call me five minutes … (late)?
A. the last
B. the latest
C. later
D. latter
Clauses and Conjunction › View
What type of clause is in red: Thomas Jefferson, who was born on the frontier, became President.
A. Non-restrictive
B. Restrictive
Mix-Tenses › ViewLast year, Mr.Yok stayed in London for two weeks, ______ there?
A. Had you
B. Did he go
C. Was he gone
D. Has he been
Grammar & Vocabulary › View
. In contrast, a ___________ usually has more than one person or many people who work together. The business is separate from the owners, so they can buy or sell it if they like.
A. shares
B. company
C. firms
