6. Combine each pair of sentences following the model. Use the conjunctions in the parentheses.Model:The single most important practice to use , when hoping to achieve wonderful grades, is listening. (line 10)Taking notes in class is important , but if not done correctly , it's more harmful than helpful.(line23)1 ) He was frightened . He managed to run . ( although )2) You got instructed. Do not leave the building. (unless)3 ) She appeared at the door . She was given a warm welcome . ( when )4 ) The bird is taken good care of . The bird can live as long as five years . ( if )5) I read the newspaper. I was attracted by a colorful advertisement. (while)6) The soldiers were surrounded. They were not discouraged. (though)7) The book was published. The book caused a remarkable stir. (once)8)I am invited.I won't go to the party.(even if)9) I visited a foreign country. I sometimes found it difficult to make myself understood. (when)10) You were left alone on a desert island. What would you do first?(if)