．No one knows exactly when our ancestors started talking，but new evidence suggests _______might have happened a long time ago．
#16908
A
which
B
what
C
it
D
they
推荐题目
In the first book, Lyra’s scientist father makes ______ possible to enter other worlds.
#16064
A
it
B
this
C
that
D
one
Alice’s kids are well-behaved, but ______ of her brother are impolite.
#15257
A
those
B
ones
C
the one
D
that
___________ and they will finish off the challenging job.
#15945
A
In a week
B
A week later
C
After a week
D
Another week
The schoolboys and schoolgirls are walking along the street, a small redcap .
#16954
A
each of them has
B
they each have
C
every wears
D
each wearing