Gina's books are   _  --on her bed, on the sofa and under the chair.

Daming didn’t take a photo in the museum. I didn’t,  _______

It was _________ difficult work ________ nobody can do it.

Alice explains things very well, what she says can be understood very ＿＿＿.

Elephants eat________, but they can move _______when necessary.