Insert the missing letters, explain the choice: pr..open the window, ra..draw the sheet, to..lie on the beach.

Solution:

• приоткрыть — the prefix pri- is written because the word means incomplete action.
• расчертить — the prefix ras- is written because it is followed by the voiceless consonant 'ch' of the root.
• загорать — in the root with alternation -gor-/-gar-, the letter o is written in the unstressed position.

Answer: приоткрыть, расчертить, загорать.