He was born _____a cold winter morning ___ 2005.
My best friend Alex failed in the math competition. I’d like to _________.
It’s creative _______ you _______ this good idea.
We all know that learning a foreign language ______ time and effort.
I will recommend Daniel because he never __________ at all times.
—I think it’s impossible for us to work out the plan in just two days. It’s too difficult.—You’re right. We can’t be _______ careful and hard while working on it.