The students get into groups and take turns asking the teachers questions.
I usually draw a demonstration grid on the board and ask the JTE a few questions.
On the worksheet the write down the question they want to ask, come to a teacher and ask it. Then return and write the teacher's intial and either a or a X depending on the answer.
One worksheet just has questions and the other has space for writing sentences using the questions. For example 'He didn't play soccer yesterday' or 'She ate rice this morning'. To use that worksheet make sure they've covered irregular verbs.