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They took rock samples back to Earth for _____study.
#42229
A
farther
B
step by step
C
further
D
far away
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- How often are the Olympic Games held? -             four years.       
#42406
A
Every
B
Each
C
In
D
For
－When did you go to the movie?.－__________.
#42181
A
Next Monday
B
Three days ago
C
Three times a week
D
For three days
―Excuse me. Which is the way to the museum?―Sorry, I don’t know. This is my _____ time here.
#37208
A
first
B
second
C
two
D
one
 I visit my grandparents __________ Saturday afternoon.
#36509
A
on
B
in
C
at
D
of
---Have you cooked supper_________?---Yes, I have _________ finished it.
#39959
A
yet, just
B
yet, ever
C
already, yet
D
already, just