• The pipe used to be hollow, but now it is filled with earth and tree roots.• The bank robbers hid the money in a hollow tree.
A: against the law
B: out of shape
C: empty
A: against the law
B: out of shape
C: empty
举一反三
- The hollow of the tree was too________.
- I curl up in my hollow tree and dream about _____.
- The walls are made of (hollow) concrete blocks. A: big B: empty C: long D: now
- Who’s in the tree A: The tree’s falling down. B: The boy’s falling out of the tree. C: The woman’s shouting.
- This tree looks high and strong but actually its trunk is (hollow). A: 中空的 B: 黄色 C: 吞下 D: 机构