Nowadays people have to pass various tests for professional __________ so that they can be qualified for a well-paid job.
| A．certificates | B．permission | C．admission | D．Perseverance |
More consumers are waiting for the further drop of housing prices with money in their hands rather than ______ houses, according to a report.
| A．to buy | B．buying |
| C．buy | D．bought |
Nobody believed his reason for being absent from the class __________he had to meet his uncle at the airport.
| A．why | B．that |
| C．where | D．because |
Shall we go ____ downtown to buy some clothes of high quality?
| A．to | B．the |
| C．不填 | D．to a |
____ we are alone, we can speak freely.
| A．Now that | B．Though |
| C．Even if | D．As if |
The chairman thought ____ necessary to invite Professor Smith to speak at the meeting.
| A．that | B．it |
| C．this | D．him |