Question

i ... writing a test for ten minutesa)am b) have beehc)had

Answer 1

I ... writing a test for ten minutes

a)am 

b) have been

c)had

Answer 2

It seems like your question is a bit unclear due to the formatting. It appears that you're asking about completing a sentence, and the options provided are:

a) am b) have been c) had

If the sentence is "I ... writing a test for ten minutes," the correct option would be:

b) have been

So the complete sentence would be: "I have been writing a test for ten minutes." This choice uses the present perfect continuous tense, indicating that the action of writing a test started in the past and is still ongoing or has just recently stopped.

If you have any more questions or if there's a specific context you'd like me to consider, please provide more details.