________all kinds of difficulties，the workers have made rapid progress in the construction of the World Expo 2010 Shanghai．
| A．With | B．For | C．Under | D．Beyond |
— _________ Betty this morning?
— Not yet, but she is sure to be here before noon.
| A．Did you see | B．Will you see | C．Do you see | D．Have you seen |
--- Where is Jack? I can’t find him anywhere.
--- He ______ his homework upstairs.
| A．might have done | B．must have done | C．might be doing | D．must do |
—I’m sorry I broke the glass.
—_____.
| A．I see | B．No problem | C．Forget it | D．You’re welcome |
Saying “hello” to somebody today can _____ a new friend tomorrow.
| A．hand in | B．result in | C．lie in | D．lead in |
However _____ they are designed, pens should function as a tool to write with.
| A．differ | B．difference | C．different | D．differently |