Mum, do you know if Dad _____ a model plane for me?- I think he will do if he _____ free.
Mom,why not ______ having noodles instead of rice?——Good idea.
Would you please give him the paper the moment he _______?— No problem.
Last night we watched a movie about __________ in the future.
There __________ some children in the painting room. They are studying painting.