He works as an engineer now, but he _____ on a farm for three years.
| A．has worked | B．worked | C．was working | D．had worked |
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 |
Although Rio knew little about marketing, he succeeded ______ other more well-informed managers failed.
| A．as | B．unless | C．what | D．where |
It is required that under no circumstances ______ betray ourselves even if there are temptations like money or beauty.
| A．we will | B．should we |
| C．we should | D．we shall |
Because of the nuclear crisis caused by the earthquake in Japan, many people lined up to buy salt ______ seeking protection from radiation.
| A．in face of | B．in search of |
| C．in terms of | D．in hopes of |
--- 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 |