Question

1. When changing lanes,

turn off the radio.
make sure you are not on a one-way street.
it is not necessary to signal.
speed up or slow down as necessary.

2. You should signal for a right or left turn

500-600 feet in advance.
7-8 feet in advance.
as you are making the turn.
at least 150-200 feet in advance.

3. To parallel park, move your vehicle parallel to the vehicle in front of the space, at a distance of

less than 1 foot.
1 to 2 feet.
about 3 feet.
about 5 feet.

Answer 1

Well, it would have be much easier if you pointed laws of what country you are expressing.
But, I bet you are talking about general American ones, and according to this :
When changing lanes, speed up or slow down as necessary.
 You should signal for a right or left turn at least 150-200 feet in advance.
 To parallel park, move your vehicle parallel to the vehicle in front of the space, at a distance of 1 to 2 feet. I bet my answer will bring you all the needed points!