19．China is a great country with a long history, ______ we all know it.
| A．as | B．so | C．but | D．and |
28. I don’t think you’ve quite___the seriousness of the situation. You seem to know nothing about it.
| A．recognized | B．mastered | C．grasped | D．Seized |
27. Mr. Bush is on time for everything. How ________ it be that he was late for the opening ceremony?
| A．can | B．should | C．may | D．Must |
26. The fantastic passenger ship sank with 2,500 passengers on board on her first _____.
| A．trip | B．travel | C．journey | D．Voyage |
25. The old picture will keep me ____________ of the old days I spent together with her in that village.
| A．remembered | B．remembering | C．reminding | D．Reminded |
24._______ herself beautifully, the girl triedto make herself _______ at the party.
| A．Dressed ; noticed | B．Dressing ; noticed | C．Dressed ; noticing | D．Dressing ; being noticing |