In our class, when the bell rang and the teacher closed his book, it was a ______ for everyone to stand up.
When ____ to danger and conflict, men tend to increase blood pressure, ____ nervous or anxious.
in the early 19th century,the school keeps on inspiring children’s love of art.
Every evening after dinner, if notfrom work, I will spend some time walking my dog.
With the loss of labor,the old farmers ________at home had to choose less labourintensive crops.
--- This afternoon let’s go to a good restaurant. --- it will cost a lot of money. --- Don’t worry. It is my _______ today.