[ Present Continuous Tense ]
He ………………….on the floor.
A. Is sitting
B. Be sitting
C. Are sitting
D. Am sitting

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Idioms › ViewHe’s very talented when it comes to computers.
a. a worm
b. a whiz
c. a wood
Grammar › View
The boy _______ threw the ball was blond.
A. Himself
B. That
C. Which
D. Who