第1题:
observed
obsessed
notified
troubled
第2题:
In
Of
To
For
第3题:
第4题:
start
starts
starting
第5题:
respective
respectable
respectful
respect
第6题:
she
their
her
第7题:
The murrelet nesting in glaciers.
The polar bear in the North Pole.
The spider in Alaska’s Glacier Bay.
Stag horn corals in the Caribbean.
第8题:
very carefully
most carefully
more carefully
the most carefully
第9题:
第10题:
the other
others
another
other
第11题:
questioning
questioned
question
to question
第12题:
over
on
to
with
第13题:
at
in
by
on
第14题:
comes
come
had come
coming
第15题:
wrote
written
been writing
第16题:
nicely
warmly
kindly
friendly
第17题:
had trained;
has trained
would trained
第18题:
had read
read
was reading
would have read
第19题:
第20题:
across to
over
onto
around to
第21题:
第22题:
cheat
choose
cherish
choke
第23题:
第24题:
was
is
were
be