—Do you believe that opportunities always ________ the prepared minds?—I couldn't agree more.
--- I once got lost during my first visit to Beijing.-- Oh, did you? You _______ me as your guide.
How long do you think it will be _______ scientists succeed in providing a cure for cancer?
When my father lost his job our living _______ had to be cut to the bone.
The two naughty boys were quiet when eating, and they were accustomed to ______ at meals.
This novel is _______ that one, so I like neither of them.