26．He never regretted the anxious hours he had had ______ for the missing papers．
| A．search | B．searching | C．searched | D．to search |
________matters most in learning English is enough practice.
| A．What | B．Why | C．Where | D．Which |
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 |