I hope you don’t mind me asking, ________where did you buy those shoes?
_________ surprises us most is that she doesn’t even know _________ the difference between “speak” and “talk” lies.
What shall we use for power when all the oil in the world has been _________?
---Have you heard that Jones, along with her parents, _________to Hainan for the winter vacation? --- Really? No wonder I haven’t seen her these days.
There was a nice little present for everyone, with a suitable poem _______ to it.
More and more people come to realize that only by _______ high technology can we increase economic power.