— Why is the chemical plant closed?— Because large quantities of waste water ______ into the Yangtze River.
—Why do you suggest we buy a new machine?—Because the old one has been damaged ______.
A few years after his graduation from a university, the man acquired the of being a philosopher.
In that school, English is compulsory for all students, but French and Russian are ______.
What are you doing out of bed ,Tom? You are to be asleep.
Genius is a complicated concept , many different factors.