So absorbed _____ in the experiment that he didn’t even notice it was already over 12 o’clock.
| A．did he | B．he did | C．was he | D．he was |
I don’t think Tom’s remarks on his monitor are ______；he is not supposed to say so.
| A．in order | B．in peace | C．in place | D．in trouble |
Whatever happens to you, you should be ______ about the future life.
| A．optimistic | B．particular | C．anxious | D．curious |
---Can you tell me who the woman going to the hall is?
---A famous writer ______to give us a lecture.
| A．is invited | B．invited | C．to invite | D．inviting |
Friendship among the nations will _______the economic development of the region.
| A．devote to | B．contribute to | C．attend to | D．appeal to |
Most citizens like to go to the Wal-Mart Super Centerbecause it has a ______of items.
| A．kind | B．sort | C．type | D．variety |