____ has never occurred to us that the accident can do so great harm to the family．
| A．That | B．It | C．This | D．One |
You were out enjoying yourself when you ________.
| A．must have studied | B．would have studied |
| C．should be studying | D．ought to have been studying |
--- Why do you work so hard day and night?
--- my parents’ expectations.
| A．To live up to | B．To meet the demand of |
| C．To make full use of | D．To put up with |
. She is a caring and helpful neighbor, all of us will always adore and be thankful to.
| A．/ | B．that | C．for whom | D．one whom |
-- Why bother? There is too much rubbish here. You’ll never pick it all up.
--- Maybe not. But at least this part of the park cleaner.
| A．was | B．will be | C．had been | D．is |
He told us sadly that more than one person in the case.
| A．involved | B．had involved | C．was involved | D．were involved |