The student, who was ______ to be studying in the classroom, was taken to the police station, which I guess was ______ with the stolen bike.
John told me he’d like to go hiking with me, his voice _______joy.
----What _______ the children be doing? ----They _______ be playing a game called Bingo.
It’s required that mineral resources_______ hand in hand with the local environment protection.
Some children were seen _______in the garden all the morning. It must have been _______who picked the flowers.
----Sunny said you were crazy about basketball, really? ----Yes. And that’s why I join the volunteers for the Olympic Games and I really _______volunteering.