The patient needs ________ care.
A. continual
B. persistent
C. successive
D. constant
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A beautiful rainbow ________ the sky.
A. stood
B. through
C. across
D. spanned
He felt ________ about his son’s safety.
A. anxious
B. serious
C. careless
D. careful
The boy is living in the ________ of the world.
A. night
B. darkness
C. dark
D. dampness
SI really ________ your helping me.
A. understand
B. appreciate
C. thank
D. want