'He suffered an injury to his knee and this is causing him pain and discomfort'.

What are the verbs in this sentence PLEASE?
I think they are 'suffered' and 'causing' but I was marked
'incorrect' .. I'm at a loss!

3 answers

pain
discomfort
is (auxillary verb)
lulu is incorrect.

suffered = correct
is causing = the whole verb (auxiliary + main verb)
Pain injury