The internet has made ____ possible for everyone to talk with friends miles away.
| A．that | B．this | C．one | D．it |
The Science Museum, ________ we visited during a recent trip to Britain, is one of London’s tourist attractions.
| A．which | B．what | C．that | D．where |
The book was written in 1946, ____ the education system has witnessed great charges.
| A．when | B．during which | C．since then | D．since when |
Some pre-school children go to a day care center,____ they learn simple games and songs.
| A．then | B．there | C．while | D．where |
The Beatles, ________ many of you are old enough to remember, came from Liverpool.
| A．what | B．that | C．how | D．as |
Women _______ drink more than two cups of coffee a day have a greater chance of having heart disease than those ________ don’t.
| A．who ;不填 | B．不填 ; who |
| C．who ; who | D．不填; 不填 |