His mother was in hospital. He asked for ___ to look after his mother.
| A．three-day’s sick leave | B．three day’s sick leave |
| C．three days’ sick leave | D．three-days’ sick leave |
—You didn’t invite Mary to the ball?
—____ her, too?
| A．Must I invite | B．Should I have invited |
| C．Must I have invited | D．Should I invite |
I only know we will have a League meeting, but I have no idea when _________ it．
| A．shall we have | B．will we have | C．to have | D．having |
______ is known to all, the earth travels round the sun once every year．
| A．That | B．As | C．What | D．It |
Many people in China are ________ a “Hope Project”, helping poor children to get compulsory education．
| A．taking on | B．taking out | C．working out | D．working on |
But for the storm, we __________ a pleasant journey, but had to turn back halfway．
| A．would have | B．would have had | C．will have | D．had |