The earth is often called the ocean planet. Its surface is 70 percent ________. ( )
land
plants
animals
water
---There are some pictures ________ the wall. What ________ can you see? ---I can see two windows ________ the wall.
Look! There are ________ birds ______the tree.
He arrived ________ Nanjing _________ the evening of July 8th.
--What’s that ______ English? --It’s a bookcase.
---I lost my school ID card.---You can ask the teacher____ it, but you must call her____36404564 first.