In fact, we’ve developed a culture _____ people continually challenge themselves to improve upon their success.
| A．where |
| B．when |
| C．which |
| D．that |
He got into the old truck and off ______ to one of the far corners of the farm to fix the fences.
| A．did they rush | B．they did rush |
| C．they rushed | D．rushed they |
I’m going to spend the summer vacation in Shanghai, _______ lives my grandmother and some other close relatives.
| A．which | B．when | C．that | D．where |
________ on their last legs, the enemies still thought they were unconquerable.
| A．As though | B．Even though |
| C．In case | D．As soon as |
The United Nations says hunger kills more people every year than AIDS, malaria and tuberculosis ________.
| A．combining | B．combined |
| C．being combined | D．having combined |
--- What happened to the young trees we planted last week?
---The trees _________ well, but I didn’t water them.
| A．might grow | B．must have grown |
| C．would have grown | D．would grow |