A idea what it was like (what S is like「Sはどのようなものか」)
B say to letting me have (What do you say to~ing?「~してはどうですか」/ let+O+原形「Oに~させる」)
C allow us to gain access (allow+O+to~「Oが~できるようにする」)
D or another I'm going to make (one way or another「何とかして」)
E is no use saying anything (There is no ~ing「~しても無駄だ」)