A-A+
It was essential that the application forms __
问题详情
It was essential that the application forms ______ back before the deadline.
A．must be sent
B．would be sent
C．be sent
D．were sent
参考答案
正确答案：C
解析：与essential，imperative，anxious，vital，keen，better，advisable，preferable，possible，appropriate，desirable，eager，insistent，natural，proper，important，necessary，urgent等形容词相关的名词性从句中，谓语要使用动词原形或"should+动词原形”，如：It is very necessary that theory should be
