All the students will write a report ___
题型：选择题
问题：
All the students will write a report ______ wild animals ______ next week. [ ]
A. on; in
B. on; 不填
C. to; in
D. to; 不填
题型：选择题
One of the most important questions they had to consider was _____ of public health.
A．what
B．this
C．that
D．which