[ Grammar ]
________________ the mystery in 1990?
A. Did they solve
B. Were they solving
Select your answer:
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Grammar › ViewGoes to the movies every weekend.
A. sentence
B. fragment
Past Continuous Tense › View
The students were doing the test…………….
A. while the supevisor was watching them
B. when the director has inspected the class
C. while it is raining
D. since half past seven