Please answer the questions with exhaustive explanation.
1.What is the difference between sentence A and sentence B?
A: Why did you join this course?
B: Why do you want to join this course?
2.What is the difference between sentence C and sentence D?
C: Where do you come from?
D: Where did you come from?
3.What is the difference between sentence E and sentence F?
E: I have been playing the violin for 10 years.
F: I have played the violin for 10 years.
4.What is the meaning and tense of the words/Phrase below?
01.I have in the UK in 2002.
02.Armchair Sportsman
03.Deceptive
04.Macho
05.Arrogant
06.Siblings
07.Childless
08.Sass out
09.I am taking a sabbatical
10.Off the wall
11.Senior citizen
12.Silver panther
13.Snowbirds
14.Allotment
15.Speed queen
16.Secret passion
17.Peers