After a knock at the door, the child heard his mother’s voice ______ him.
#97899
A
calling
B
called
C
being called
D
to call
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Once _____ , the machine will keep running.
#94334
A
start
B
started
C
to start
D
starting
The flowers need ____.
#97809
A
watered
B
to water
C
water
D
watering