"Why ___ at me now?" — "I ___ to remember where I saw you."

1. The phrase 'at me now' indicates an action happening at the moment of speaking, requiring Present Continuous.

2. The subject is 'you', so the auxiliary verb is 'are'. The verb is 'look'. The question is 'are you looking'.

3. The second part describes an ongoing mental process, so Present Continuous is appropriate.

4. The subject is 'I', so the auxiliary verb is 'am'. The verb is 'try'. The answer is 'am trying'.

5. Combined answer: 'are you looking', 'am trying'.