We are short _________ energy and water_________ the overpopulation.
A. of; because B. of; because of C. in; because
I __ a notebook. Please bring one to me.
| A．need | B．know | C．spell | D．have |
Please __ your notebook to school. I want to use (用) it.
| A．have | B．bring | C．take | D．do |
Listen! Some birds are singing __ the tree!
| A．in | B．on | C．at | D．of |
We can see__ old bike __the tree.
| A．a; under | B．the; at | C．a; on | D．an; under |
--Is your hat on the sofa?
| A．Yes, I am | B．No, it is | C．Yes, she is | D．Yes, it is |