All the others seemed to know each other and I began to feel .
| A．given away | B．fallen behind | C．turned down | D．left out |
Walter offered us a lift when he was leaving the office, but our work ______, we didn’t accept the offer.
| A．not being finished | B．having not been finished |
| C．had not been finished | D．not having finished |
ThejobprovedtobemuchmoredifficultthanI______.
| A．expect | B．expected | C．wouldexpect | D．hadexpected |
It was 300 hundred years ago _______ this historic temple was built by a wealthy Mandarin.
| A．that | B．when | C．since | D．before |
The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can ___ all foods are secure to us, but we are sure that the situation is turning for the better.
| A．acknowledge | B．guarantee | C．identity | D．clarify |
Going on a trip into ______ space must be quite ______ exciting experience.
| A．/ ; the | B．/ ; an | C．the; an | D．the; a |