[ Grammar ]
They _____ television when suddenly someone knocked at the door.
A. watch
B. are watching
C. were watching
D. have watched

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Vocabulary › View
What does the word ‘random’ mean?
A. Clear and accurate
B. Very large, heavy and solid
C. An area or a region with a particular feature or use
D. Done, chosen, etc. without deciding in advance what is going to happen, or without any regular pattern