Tommy suggested________the lights when we go out

1)Tommy suggested________the lights when we go out.
A.To turn off
B.turning off
C.turn off
D.turned off
2) What would you like to eat, noodles______ sticky rice?
A.and.       B.but.      C.or.       D.however.
3)you______ the plumber to make sure there are no cracks in the pipes.
A. Should get
B. Should gets
C. Should getting 
D. Should got 
4)hurry up,__________ you will miss the train.
 A.So                B.but.            C.and.           D.or.
5)if you busy, we__________ this by ourselves
A. Would do 
B. Did
C. Will do
D. Doing