---_____ is Maria?    ----She is twelve years old.
#42525
A
What
B
Where
C
How old
D
How
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— ______ do you go to the gym? — Once a week.
#38583
A
How far
B
How often
C
How long
D
How soon
________ she ran to the classroom, the teacher had begun the class.
#42120
A
What time
B
By the time
C
At the time
D
During the time
Wu Chang studies English by_____English language TV.
#35375
A
seeing
B
looking
C
to watch
D
watching