1) Have you ever waste your time?
2) Environmental pollution can cause greenhouse effect.
3) The victim was found under the bridge this morning.
4) Hurricane brought a huge damage to our town.
5) surbase - ???
6) Some of snakes have a deadly poison.
7) I can see a chimney from my window.
8) You shoul remove this spots.
9) Greenhouse effect is a big threat to mankind.
10) We have many measures today in school.
11) You can't depend on your own in this question.
12) My ticher withdrawed my mobile phone at the lesson.
13) He started to alter his own home into nice hunting house.
14) People consume too many junk food nowadays.
15) I thin that water purification is our future.