Question

he is very tired. he cannot work. (combine into a simple sentence)

Answer 1

he cannot work as he is very tired

Answer 2

simple sentence:

A simple sentence has just one clause in simple sentence .so we can easily combine these two sentences using too…as well as to.  

Read the following sentences.

We are given sentence. He is very tried. he cant’t work.

So here we are write a correct with combine into the simple sentence.

Thus, the correct sentence will be “He is too tried to work”

I hope it will be helpful to you.