A killer whale at Sea World Orlando jumped out of its tank on Wednesday and fatally attacked a worker as horrified visitors________.
| A．has been looking up | B．looked on | C．had looked off | D．was looking in |
－ I came all the way to inform you of the time and place of the meeting.
－You could have __________ yourself the trouble by calling me.
| A．shared | B．spared | C．cost | D．removed |
— The food in the restaurant is horrible. If only we ______ to the students’ canteen.
— But the food isn’t everything. Isn’t it nice just to get away from all the noise?
| A．would go | B．have gone | C．had gone | D．will go |
Many college graduates are willing to start online shops to get over the period ______ they have difficulty finding a satisfactory job.
| A．where | B．when | C．which | D．that |
One can’t be really happy if _________he enjoys doing is regarded by society as of no importance.
| A．how | B．that | C．what | D．where |
Tom does speak Chinese well, but his reading and writing skills leave much _________.
| A．to improve | B．to be improved | C．being improved | D．having improved |