你觉得这封信怎么样？

What do you ___make ___of this letter?

我对他摸不透。

I don't know what to ___make ___of him.

起初我们不知道这是怎么回事，我们都惊呆了。

At first we did not know what to ___make ___of it and we were all dumbfounded.