Is he the only one of the students who ________ here just now

What are you going to do this afternoon?— I’ll probably go for a walk later on________it stays fine.[ ]

They are busy______ready for the exam

lice still haven’t found her, butthey’re doing all they _____

Though it is very hot, I am busy writing materials for my students, only ____ once in a while to have some water. [ ]