Believe it or not, no bread eaten by us is as sweet as _______ earned by our own labor.
A one B. that C. such D. what
_____ you have learned Spanish, you will find Italian easy.
| A．Because |
| B．Thought |
| C．Before |
| D．Once |
The old man insisted that I _____ his wallet and _____ to the police station with him.
| A．had taken; go |
| B．take; should go |
| C．would take; had gone |
| D．should take; go |
It is in the hall behind the teaching building _____ we usually have our PE lessons on rainy days.
| A．where |
| B．that |
| C．which |
| D．what |
We _____ on this project for four hours. Let’s have a rest.
| A．are working |
| B．have been working |
| C．worked |
| D．had worked |
There are over 58,000 rocky objects in _____ space, about 900 of which could fall down onto _____ earth.
| A．the; the |
| B．/; the |
| C．the; / |
| D．a; the |