Mis tíos usan la mesa y mis primitos usan la mesita

Okay so i'm taking an online spanish course (penn foster), and in the study guide, you have to create a bunch of sentences with words you've learned so far. translating, reading, and those kinds of things are fairly easy, but when it comes to making my own sentences, my brain just kinda waltz's away. anyone got any tips?

Briefly describe the typical weather for the following seasons by completing the sentences. then record yourself saying all 5 completed sentences. 1. en el verano, usualmente 2. en el otoño, usualmente 3. en el invierno, usualmente 4. en la primavera, usualmente 5. mi tiempo preferido es cuando

No debemos el medio ambiente. a. contaminar b. preservar c. desechar d. cumplir