One reason ______ Billy Crystal is popular with all age groups is _______ he is quick thinking and has the ability to amuse the audience.
| A．that, that | B．why, because |
| C．why, why | D．why, that |
The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.
| A．that | B．it | C．this | D．him |
Eating too much fat can______ heart disease and cause high blood pressure.
| A．result from | B．contribute to | C．attend to | D．lead in |
. You have made a few spelling mistakes in your composition, but it is well written_______.
| A．on a whole | B．as a whole | C．general speaking | D．as the whole |
She ______his number in the phone book to make sure that she had got it right.
| A．looked up | B．looked for | C．picked out | D．picked up |
-- Nancy is not coming tonight. --- But she______!
| A．promises | B．promised | C．will promised | D．had promised |