---Why does the boy bring a chair here?---Because the bookshelf(书架) is half a metre __________ his head. He has to stand on it to get the books on it.
—What can I do for you?—______.
---Where _____ your sister ______lunch? ----At school.
----______ does Lucy like? ----Tomatoes.
These students have good _________.
---Let’s _____ salad.----Oh, no. I______ _it.