English question - urgent

If you were doing a lot of works then you might be lack of time to catch up the afternoon routine bus.
If I didn't work hard enough to finish all these paper works, then it was a race against time.
If you could finish all these assignments then you might have spare time to play.

2012-09-02 05:29:00 補充：
Amendment; If I didn't work hard enough to finish all these paper works,then I must be a race against time.

eng.questions--urgent sentences:-
(1)If you're in a lack of time,then you're in a lack of self-confidence.
----Don't play all day,you're in a lack of time already.
(2)It is a race against time in taxi, because I was late for work.
(3)Do you have spare time for charity work?

圖片參考：http://imgcld.yimg.com/8/n/HA00526499/o/701208280088213873365080.jpg

Ihope the solution can help you^^”