to read

I read.

I read the whole novel.

 

to understand

I understood.

I understood the whole text.

 

to answer

I answered.

I answered all the questions.

 

I know that – I knew that.

I write that – I wrote that.

I hear that – I heard that.

 

I’ll get it – I got it.

I’ll bring that – I brought that.

I’ll buy that – I bought that.

 

I expect that – I expected that.

I’ll explain that – I explained that.

I know that – I knew that.