The correct answer is himself. Jason bought himself a ticket to the game tomorrow. The antecedent of the pronoun "himself" is "Jason". "Himself" is called a reflexive pronoun. Reflexive pronouns are used to refer back to the subject of the sentence to avoid repetition. These pronouns usually ends in -self or -selves.
Because Thailand is mostly made up of mountainous terrain and many forests.
Aside from the choice of subject, elements to consider include syntax, tone, and vocabulary. These need to be keyed to the specific audience for best effect.
Emergency should be the answer to your question. Drought does not fit the adjective. Because is a adjunction . Quickly is most likely consider a action, so emergency should be your answer! Hope that helps.