Our teacher said that light______ faster than sound.
#38930
A
travel
B
travels
C
travelled
D
is travelling
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After Steven sent some e-mails ,he______ surfing the Internet.
#36785
A
starts
B
has started
C
will start
D
started
—How many times ________ Li Yan ________ to the Great Wall?—Twice.
#38217
A
has; been
B
is; going
C
has; gone
D
does; go
I was doing my homework while my parents __________ TV last night.
#42075
A
watched
B
were watching
C
have watched
D
are watching