1.       When they build nests during spring nesting season, Canadian geese are fiercely terrestrial.

à____________________________________________________________

2.       Students must not speak Vietnamese when they are in an English lesson.

àDuring_______________________________________________________

3.       Soon after I had given him the money, he gave it to the old man.

àSoon after____________________________________________________________

4.       Jack saw a skunk while he was walking home. (WHILE)

___________________________________________________________

5.       Jack stopped when he spotted it. (WHEN)

___________________________________________________________

6.       Jack waited a short time before he continued on. (BEFORE)

___________________________________________________________

7.       Jack still smelt the skunk after he passing that area. (AFTER)

___________________________________________________________

8.       Jack has been taking a new way home since seeing a skunk there. (SINCE)

___________________________________________________________

16. Though she was surprised at the results, she was pleased with what she had done.

=> Though________________________________________________________

17. The family stopped to visit many relatives while they were driving across the country

=> While________________________________________________________

18. The application will at least be reviewed if it is submitted by the fifteenth of the month.

=> If submitted________________________________________________________

19. The medicine will not be effective unless taken as directed.

=> If it________________________________________________________

20. Though made in Japan, the bike is not very expensive.

=> Although it________________________________________________________

21. Before he left on his trip, he gave his plan to his wife.

=> Before ________________________________________________________

22. When he was told about the news, he became disappointed

=> When ________________________________________________________