---What does Tom’s uncle do?
---He is a teacher. He __________ physics at a school now.
| A．will teach | B．has taught | C．teaches | D．taught |
—_______ is the ruler? Is it black?
—Yes, it is.
| A．How | B．Who | C．What | D．What color |
—What’s that?
—_____ is an eraser.
| A．This | B．That | C．It | D．You |
—______ is this? Is it a ruler?
—Yes, it is a red ruler.
| A．How | B．Who | C．What | D．What color |
—Is that _____ orange, Jack?
—No, it’s ______ watch.
| A．an, an | B．an, a | C．a, a | D．a, an |
—What ____ this in English?
—It _____ a book.
| A．is, am | B．is, are | C．are, is | D．is, is |