Задание

4. You look so detached. What______ you_____________ (think) about? – I_____________ (think) about those words of Jane’s. I ___________________(think) about them all day long and I still___________________ (not understand) what she meant.

are / thinking / think / am thinking / do not understand

are / thinking / am thinking / have been thinking / do not understand

do / think / am thinking / have been thinking / do not understand