. One of the students hasn’t prepared lessons very well.
.Learning foreign languages calls for your memory,time,patience and emotions._______,it is not a simple thing.
—How was your examination? —It wasn’t very difficult,but it was__________long.
Anyone who has a _________of humor can get along well in__________society.
Doctors are still trying their best to__________the boy for his broken leg.
The United States has become a significant musical _________around the world.