---Never touch my computer while I’m away．
--- Sorry, __________.
| A．I shouldn’t | B．I mustn’t | C．I won’t | D．I don’t |
______black—headed gulls(红嘴鸥) come to Kunming to spend their winter every year.
| A．Thousands | B．Thousands of |
| C．Thousand of | D．Thousand |
Helen is my friend. She is in ______ at Beijing No.11Middle School.
| A．Year 3 | B．3 grade |
| C．3th Year | D．grade third |
---Look at that tall building!
---It is _______tallest building in the city.
| A．three | B．third | C．the third | D．the three |
Tomorrow is my father's____birthday.I will buy him a gift.
| A．fortieth | B．forty | C．fourteenth | D．fourteen |
_________of people will visit Beihai .
| A．Thousand | B．Thousands |
| C．Thousands of | D．Thousand of |