YeS what is need of help what subject are we looking at here?
IF I can sing well enough, I'll join the school chorus.
The IF implies that something is conditional i.e. it may happen, it may not happen (it depends on whether you can sing well enough!)
Hope this helps... :)
tha answerr of the match the following
1 D
2 E
3 A
4 B
5 C