harmful
| A．award | B．vinegar | C．grammar | D．carbon |
A good friend of mine from I was born showed up at my home just before I left for Beijing.
| A．how | B．whom | C．where | D．which |
—Ann is in hospital.
— Oh, really? I __ __ know. I __ __ go and visit her.
| A．didn’t; am going to | B．don’t; would |
| C．don’t; will | D．didn't; will |
When he the door, he found his keys were nowhere.
| A．would open | B．opened | C．had opened | D．was to open |
Every evening after dinner, if not from work, I will spend some time walking my dog.
| A．being tired | B．tiring | C．tired | D．to be tired |
The loss has not yet been ______ accurately, but it is believed to be well beyond a hundred million dollars.
| A．calculated | B．considered | C．completed | D．controlled |