we should exploit the Antarctic’s natural resources is open to discussion.
--- I need to advertise for a roommate for next term.--- ________? Mary is interested.
--- I don’t think I’ll be able to go mountain-climbing tomorrow. --- ______?
--- So you gave her your phone? --- ____she said she’d return it to me when she could afford her own.(2011大纲卷20)
He finish his homework yesterday, but he couldn't find it anywhere.
The boy bought a new dictionary he turned for help.