请输入或粘贴题目内容
搜题
拍照、语音搜题，请扫码下载APP
题目内容
（请给出正确答案）
It is essential that all the details in this case ______ first.
A．is investigated
B．was investigated
C．be investigated
D．shall be investigated
答案
更多“It is essential that all the details in this case ______ first.A．is investigatedB．was inve”相关的问题
第3题
Vitamin B is essential for human body.
A．Right
B．Wrong
C．Not mentioned
第5题
It was essential that ______ (申请表要在截止日期之前寄回).
第6题
A. absolute
B. inevitable
C. essential
D. obvious
第7题
It is essential that everyone_______ safety procedures in the event of an emergency.
A．follow
B．followed
C．following
D．be followed
第8题
It is essential that these application forms ________ (尽早寄出去)．
