— TV was invented in _________ century.— Is that true?
---My grandfather was ill in hospital last week.---________.
The high school entrance examination will be over soon. Can you tell me _____the summer holiday?
Mr. Smith’s never angry with their daughter. __________ Mrs. Smith.
________ does it take you to do your homework every day?
---How often do I need to feed the birds?---They______ food every day, or they will be hungry.