So suddenly ________that the animals in the zoo looked very frightened during the total solar eclipse (日全食).
The great millionaire gave away all his fortune to the charity and lived a simple life,________.
While dancing happily at home,_______________ .
Some people argue using ____________ nature to meet our own needs may spell disaster, unless we start to look around and understand how _________ clean environment benefits us all.
-Do you mind if I keep pets in this building ? -_____________________.
---Excuse me, Sir, is the swimming pool open every day? ---______, only from 6:00 pm to 10:00 pm