Wah i'm confused with the past, present and future tense liao...

Service 7/78
AM Xover
1. 21S
2. I think more than 1. But don't know why. 
Supplementary
Trip on Service 7 during PM Peak
1. BBDEP 147 32S
2. 33....
Service 33
Supplementary Buses
1. Sv45 34S & 36E
Service 7/78
AM Xover
1. correct
2. There's more than one. Total how many?
Supplementary
Trip on Service 7 during PM Peak
1.
correct
2. 33 from which depot? Is this your final answer?
Service 33
Supplementary Buses
1. Incomplete answer
Service 35
Supplementary Trips
1. correct
Service 48
Supplementary Trips
1. correct
hmm ok some questions on supplementary buses and trips
Service 2/58
AM Xover
1. Which supplementary service did
the crossover bus of this duty used to do? What was the block
number?
2. Did 58 have supplementary buses from other services before? If
yes, which service(s)?
Service 7/78
AM Xover
2. Is there only one bus doing the
supplementary trip all along? If no, how many were they? Which
factor caused it to become its current status?
Supplementary
Trip on Service 7 during PM Peak
2. Since 2003, which services had done this supplementary trip?
Fast Forward
10e
1. Before FFw10e exists, did the buses run its trip on S10 during
AM Peak? If no, which service did the S10 buses do during AM
Peak?
Fast Forward
14e
1. Before FFw14e exists, did the S14 buses
run its trip on S14 during AM Peak? If no, which supplementary
service did they do?
2. Which parent service took over the trips on the supplementary
service after FFw14e was introduced?
Service 31A
Supplementary Trips
1. Previously there were
two buses that do 31A in the morning peak. What was their parent
service?
2. Briefly state why these trips were taken out.
Service 33
Supplementary Buses
1. Name the current supplementary service(s) the supp buses
do?
2. Name the previous supplementary service(s) these same buses
do?
Service 35
Supplementary Trips
2. How many supp buses did
S35 in Oct 08? Name the previous parent service that did these
trips before the current parent service.
Service 36
Supplementary Trips
1. Name the parent service
for these supplementary trips.
2. Which parent service(s) did supplementary trips on Service
36 before?
Service 48
Supplementary Trips
2. State the departure
times for the supplementary trip. Indicate how many trips this bus
does.