Pine trees are usually believed to _______ cold weather.
A、guardD
暂无解析
John_______tobeapoliteman.Butinfactheisveryrude.
The _______ work continued for more than a week but there was still no sign of the missing boy.
He _______ to study harder in the future so that he could have more opportunities to find a better job.
Itisnot---_______formetoreturnallthebookstothelibrarynowbecauseIstillneedsomeofthemformyresearch.
We do not have a _______ school in our institute. The highest degree we provide for the students is a B. A. and a B.S. .
