He is determined to become a specialist ________ computer when he grows up.
| A．for | B．in | C．on | D．about |
The president promised to keep all the board members _____ of how the negotiations were going on．
| A．inform | B．informing |
| C．be informed | D．informed |
______ chemistry is a branch of chemistry．
| A．Applying | B．Apply | C．Applied | D．To apply |
More and more high-rise buildings have been built in big cities ______ space．
| A．in search of | B．in place of |
| C．for lack of | D．for fear of |
---We haven’t seen each other for ages．
---No, I don’t remember how many years ago _______ I last saw you．
| A．it was that | B．was it that |
| C．it was when | D．was it when |
We are still at the airport．If it weren’t for the delayed flight, we _______ the concert right now．
| A．can be enjoying | B．must have enjoyed |
| C．would be enjoying | D．should have enjoyed |