--When _____ the abacus _____? -- In the sixth century by the Chinese people.
| A．is, invented | B．did, invent |
| C．was, invented | D．does, invent |
—Sarah feels cold. What does she should do?
—______________.
| A．She Should take a deep breath |
| B．She should go swimming |
| C．She should wear warm clothes |
| D．She should see a doctor |
_____ worry, little Tom. I’ll help you.
| A．Don’t | B．Doesn’t | C．Are | D．Do |
—______ does Bill feel?
— He is worried.
| A．What | B．How |
| C．Where | D．Who |
Let’s ____ Chinese together.
| A．study | B．studying |
| C．studies | D．Studys |
How many ____do you have?
| A．hobby | B．hobbies |
| C．hobbys | D．a hobby |