—I don’t know how to pronounce this word. Can you help me? —Sorry, I don’t know, either. Let’s _________ in my dictionary right now.
I don’t doubt _________.
—Is your uncle in his _________? — Yes. His _________ birthday is coming next month.
A few students don’t know ________ they should deal with stress before________ an exam.
—How much difficulty did you have this problem? — .
—It’s dangerous to walk across the street carelessly. —You’re right. We can’t be _________ careful while crossing the street.