He is not native, if he were, we _______ this discussion over his identity.
| A．would not be having | B．are not having |
| C．had not had | D．will not have |
If people eat natural poisons by mistake, they ________ go to hospital without delay.
| A．would | B．can | C．may | D．must |
Before us lies the biggest room, ________with things like guns, dolls and old clothes.
| A．filling | B．filled |
| C．being filled | D．having been filled |
The invention of artificial hearts marked a turning point in the battle heart disease.
| A．among | B．for | C．against | D．between |
—Thank you for your coffee.
—But you________ it.
| A．didn’t drink | B．aren’t drinking |
| C．don’t drink | D．hadn’t drunk |
Lily seems to know a lot about Hong Kong, but she has never been there.
| A．luckily | B．strictly | C．actually | D．naturally |