No one knows exactly when our ancestors started talking，but new evidence suggests _______might have happened a long time ago．
#4852
A
which
B
what
C
it
D
they
推荐题目
With a lot of difficult problems ______, the newly-elected president is having a hard time.
#4661
A
settled
B
settling
C
to settle
D
being settled
.She ________the film. She knows nothing about it.
#4766
A
can’t see
B
can’t have seen
C
must see
D
mustn’t have seen
— Any advice about this trip?— Well, no food is available on _____ island so make sure you bring _____ packed lunch and drink, as well as your camera and sunblock.
#4605
A
an, the
B
the; a
C
the; /
D
an; a
Though ____money, his parents managed to send him to university.
#5035
A
lacked
B
lacking of
C
lacking
D
lacked in
1 feel that one of my main duties ______ a teacher is to help the students to become better learners.
#4903
A
for
B
by
C
as
D
with