The number of foreign students attending Chinese universities _____ rising steadily since 1990.
| A．is | B．are | C．has been | D．have been |
However difficult you find to arrange your time, it will pay off in the long run.
| A．this | B．one | C．it | D．that |
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 |