He doesn’t plan to go back to his home________he makes a fortune in Hong Kong.
| A．while | B．since |
| C．or | D．until |
Peter’s jacket looked just the same as Jack’s，but it cost________his.
| A．as much twice as | B．twice as much as |
| C．much as twice as | D．as twice much as |
They ______ the train until it disappeared in the distance.
| A．saw | B．found | C．noticed | D．observed |
—I’ve got a headache again!
—Sorry to hear that. Walk to work every day and you’ll soon back in ______.
| A．situation | B．condition | C．position | D．attention |
The patient's son asked the doctor the question________his father could survive the big operation.
| A．whether | B．if | C．that | D．what |
I called the airline to________my flight reservation a week before I left for Toronto.
| A．see | B．consult | C．confirm | D．strengthen |