Hi guys. I am currently playing 25NL zoom poker

I usually call two street with medium pair.

Here is examples.

UTG(me) open-raise with T9s and BTN calls.

Flop comes : K94 rainbow.

I check and BTN bet and I call.

blank comes on the turn, lets say 2.

now, do I need to check/call or check/fold?

Here is another example. I-UTG- open raise 88 and BTN calls

Flop comes JJ3 rainbow.

I check and BTN bets and I call.

7 comes on the turn and I check and BTN fires again.

I usually check call two street, but since not many people are bluffing enough in micro stakes,

I think I am supposed to call only one street in first example

However, I guess I can consider call two street in second example.

Would you please give your thought?