What are the subject pronouns to these questions?

Drag the correct label to each picture. each label can be used more than once. identify the type of weathering seen in each picture. the choices are chemical weathering or mechanical weathering.

Which one of the following is a trick used in spanish to identify the right hand? touch the tips of your index fingers with the tips of your thumbs. the hand that forms a lowercase b is your mano derecha. touch the tips of your index fingers with the tips of your thumbs. the hand that forms a lowercase d is your mano izquierda. touch the tips of your index fingers with the tips of your thumbs. the hand that forms a lowercase d is your mano derecha.

Completa la oración con la voz pasiva con se. used cars for sale. carros usados. (there are no option choices, write the answer in the passive tense, don't use google translate)