When a VFR pilot reaches the last reporting point on their way out of a CTR, the controller can approve their leaving the frequency.

You want to instruct a VFR aircraft to join the default (left) traffic circuit. Select the correct instruction(s).

You have the following situation:

A British Airways A320 just departed from Runway 25 towards the north. A KLM B738 is on the runway waiting for its takeoff clearance departing towards the south. What is the minimum distance betweeen the two aircraft before giving the takeoff clearance, if the suceeding aircraft is lined up and ready for departure?

When an IFR arrival goes around, they will follow the published missed approach procedure for the approach they were on without being specifically instructed to "fly published missed approach".

If it gets too busy you may stop giving traffic information in D(CTR).

What options do you have for incorporating VFR into a sensible landing sequence?

The decision on how much spacing you need between two take-offs depends solely on the radar separation minimum and wake turbulence separation minimum.

What is the latest time at which a flight must be cleared to land during normal operations?

You can always vector VFR aircraft onto final to achieve a nice landing sequence.

A VFR missed approach will join the default (left) traffic circuit as their missed approach procedure without being instructed to do so.