[ Grammar and Vocabulary ]
Vietnam is ………. multiethnic country with 54 ethnic groups.
A. a
B. an
C. the

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Prepositions › ViewAfter a thorough search of the room, the thief found the microchip __________ the top shelf of the bookcase.
A. In
B. On
C. At
Conditional Sentence Type 1 › View
You won’t ________ good at sports if you ______ a lot.
A. Like – smoking
B. Be – smoke
C. Are – smoke
D. Being – smoking
The people of China invented kites long ago.
A. Predicate
B. Subject
Present Tense vs Past Tense › View
Grace and her friends go to school today/ yesterday
A. today
B. yesterday