—Is there a ______ near here? I want to buy a football.—Oh, yes! It’s next to the bookshop.
I couldn’t ____. The line was busy.
The conference has been held to discuss the effect of tourism(旅游业) ___ the wildlife in the area.
Sandra was a student ____ the age of 21.
Scientists say they are beginning to _____ in the fight against cancer.
As the spring comes, the flowers began to _____.