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 |
My sister ,_____ my family are proud, was admitted to Tsinghua University last autumn.
| A．who | B．which | C．in which | D．of whom |
He then drew out of a pile of papers with name and dates which could 20 years ago.
| A．marked; date from | B．marked; be dated back from | C．marking; date up to | D．marking; date from |
------ Where is my dictionary ? I remember I put it here yesterday .
-------- You ______ it in the wrong place .
| A．must put | B．should have put | C．might put | D．might have put |
When a pencil is partly in a glass of water , it looks as if it__________ .
A. breaks B, has broken C. were broken D. had broken
He has the ________ of rich experience ______other workers .
| A．advantage ; than | B．disadvantage ; over | C．disadvantage ; than | D．advantage ; over |