Evidence obtained from observation and experiment is often used to _____ a scientific theory.
#4841
A
confirm
B
confine
C
conform
D
conceive
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______ that he runs the fastest in his class.
#4553
A
It is no doubt
B
It is doubtless
C
There is no doubt
D
I don’t doubt about
To their great relief, the missing child returned home, ______, after an absence of two weeks.
#4920
A
felt tired and sound
B
tiring and soundly
C
feeling tired but soundly
D
tired but sound
.—Peter looks sleepy.  —So ________ if you had a fever.
#4757
A
did you
B
would you
C
you did
D
you would