New mineral resources may be discovered during the forthcoming Antarctic _____.
| A．excursion | B．execution | C．extraction | D．expedition |
The second runway of Hong Kong International Airport was officially ____ on May 26,1990.
| A．put into effect | B．made use of |
| C．taken notice of | D．put into use |
I tried to call on you last week but your dog simply ____ not let me come through the gate.
| A．could | B．would | C．might | D．should |
The ____ is that the new machine will arrive tomorrow.
| A．chance | B．luck | C．happening | D．accident |
---I'm going to Guilin next week. Do you have anything ____ there?
---No, but thank you all the same.
| A．to be taken | B．to take | C．taking | D．taken |
I haven’t seen her ____ the time ____ she had the accident.
| A．for; that | B．since; when | C．since; as | D．for; when |