[ Perfect Tenses ]
What are the signal words for the Present Perfect Tense?
A. yesterday, last week, ago
B. soon, later, tomorrow
C. before, after, when
D. by the time, by, in 2015

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Verbs & Phrasal VerbsComparison of Adjective and AdverbComparative and Superlative AdjectivesPast TensePast Perfect or Past Perfect ContinuousInterrogative PronounsImperative SentencesGrammar - QuantiflierFuture Simple TenseAdverbial Clause of MannerOther quiz:
Grammar and Vocabulary › ViewAncestor worship is ………………….most important religious activity among the Bru-Van Kieu.
A. the
B. a
C. –
Grammar › View
Now everybody knows where you live.
You shouldn’t ….. ….. your complete address to your online friends.
___
A. have given
B. give
Present Continuous for Future › ViewI _______ playing basketball at 5 o’clock on Saturday.
A. am
B. is
C. are
Present Tenses and Connectors › View
You should get 8 hours of sleep nightly; ___, you should not use any devices before going to bed.
A. although
B. immediately
C. otherwise
D. furthermore