How long have you __________ this book?
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.
The old temple _______ a lot of tourists from all over the world so far.
---I don’t know where to find something about the rainforest.---Why ______on the Internet? There is a lot of information about it.