It worries the couple a lot ______ their only son is behaving worse and worse these days.
It is hard to imagine what I ___ today if I hadn’t been admitted to Nankai Middle School 15 years ago.
Not until they left school ___ how much their teachers loved them and helped them.
___ three times in a row, the boxer decided to make a fourth attempt, though.
___ is well known is that Africa had contacts with India and the Red Sea civilizations from the earliest times.
The truly homeless are the rich who __ _ their home into a hotel hall.