[ Grammar ]
Currently, I……… a research into air pollution in our town.
A. does
B. do
C. did
D. am doing

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Past Simple VS Used toPresent Continous TenseCountable and Uncountablemust/shouldClauses and ConjunctionPast Simple, Past Continuous, Past Perfect, Past Perfect ContinuousAdverb Clause ConnectorQuantifiers & Modals of ObligationThird Grade ExamPresent Simple ProgressiveOther quiz:
Vocabulary › View Our English teacher marks our essay thoroughly so that we are able to know our mistakes.
A. in a detailed way
B. in a casual way
C. very carelessly
D. very impatient
Past Simple Tense › View
Last summer I _____ Ngoc Son Temple in Ha Noi.
A. visiting
B. visits
C. visitted
D. visited
Grammar and Structure › ViewHe —– Tim tommorrow.
A. is
B. meets
C. isn’t meeting
D. meet
Subject-Verb Agreement › View
Three-quarters of the student body __________ against the tuition hike.
A. Is
B. Are
