I find it very hard ____ the question.
| A．to answer | B．answers | C．answering | D．answered |
This is ________ apple. It’s ________ green apple.
A. a, an B. an, a C. an, an
—What are these?
—__________.
A. These are rulers B. It’s an egg C. They are cakes
Those are _________.
A. five boxes B. an orange C. a car
—________ is he?
—He’s Tony.
A. Who B. How C. Where
—How do you do?
—_________
A. Hello! B. Nice to meet you. C. How do you do?