Let's learn to use the problem we are facing ______ a stepping-stone to future success.
Lifelong learning is both formal and non-formal; and the boundaries between face-to-face teaching and ___________ education are increasingly blurred.
Let's discuss these problems at the meeting, ________?
If they are willing to lend us the money we need, all our problem will be _____.
Let's go to the airport a little earlier _____ we can choose better seats.
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