It's very convenient to buy different kinds of bottled drinks in the supermarket．
Every time I want to give up， my parents always （鼓励）me to keep trying．
The cinema was half （空的） because the movie was so boring．
Bob and Jim have been good friends （自从） they joined the same tennis team．
The singer is good at playing the （吉他） and making wonderful music．
Elephants have good memories． They never （忘记） the places with food and water．