"al" would correctly complete the sentence because it correctly links the verb "vamos" to "parque"
-Let's go to the park at five in the afternoon.
The three main types of solder are lead-free solder, lead-based solder, and flux-core solders. There is another type known as silver alloy solder. These types are made on the composition of alloys. Apart from this, there are other solder types depending on the form, core style, and application.
B) Esta nunlado - it is cloudy
Either there’s a game at the park or there’s enough wind for kites