Writing stories and articles _____what I enjoy most,
A.is
B.are
C.was
D.were
答案:A
There are some trees our classroom.[ ]
A. in front
B. in the front of
C. in front of
D. front of
在原停电范围内增加工作任务时若需变更或增设安全措施者必须填用新的工作票,并征得工作票签发人和工作许可人的同意。