Xi’an is one of ______ capital ______ in China.
| A．older; city | B．the older; cities |
| C．the oldest; city | D．the oldest; cities |
Don't give up, Tom. You haven't realized ______ great progress you've made!
| A．what | B．what a | C．how | D．how a |
Grace has been a teacher for two years. She ______ in a school when I first met her.
| A．teaches | B．has taught | C．is teaching | D．was teaching |
Mary is tired of learning because she is always ______ to do better than she can , both at school and at home.
| A．thought | B．expected | C．protected | D．helped |
—All the oil in the world will ______ some day.
—Yeah. What shall we use at that time?
| A．give away | B．put away |
| C．run out | D．pick out |
—How wonderfully Jim is swimming in the pool！
—It ______ be Jim. I am not sure.
| A．needn't | B．mustn't | C．may not | D．can't |