Lawrence Craven, a doctor from the USA, is the author of several published reports, one of ________ introduced the idea in 1953 ________ aspirin could reduce the risk of heart attacks.
| A．them; when | B．which; that |
| C．what; that | D．which; when |
— Have you seen the film Under the Hawhorn Tree?
—Of course, I have. It was in our village _____ it was made.
| A．that | B．where | C．when | D．which |
You can see the stars on a clear night, but in the daytime they are _____
| A．unbelievable | B．invisible | C．inaccessible | D．unavailable |
I_______ such a foolish mistake if I had been a little more careful.
| A．wouldn’t make | B．wouldn’t have made |
| C．hadn’t made | D．didn’t make |
Look over there—there’s a very long, winding path _____ up to the house.
| A．leading | B．leads | C．led | D．to lead |
I was out of town at the time, so I don’t know exactly how it _______.
| A．was happening | B．happened | C．happens | D．has happened |