When we ___ electricity, we get heat from an electric heater.
| A．switch on |
| B．put off |
| C．turn off |
| D．carry on |
____________better ways for digging tunnels__________, the first railway tunnel under the River Thames was dug in 1884.
| A．As , developing | B．With, developed |
| C．As , were developed | D．With, development |
The initial tunnels were just ___________ the surface of the ground. People were transported in carriages, which were ___________ the narrow tunnels by steam engines.
| A．under, broken through | B．below, put through |
| C．of , gone through | D．beneath, pulled through |
-Why ________ it rain at weekends?
-Never mind, let’s watch TV at home.
| A．can | B．would | C．shall | D．must |
___________ so delicious, the soup is very popular with the kids.
| A．Tasted | B．Tasting | C．To taste | D．Taste |
__________ these tips, and your time _______ doing research on the Internet _________ much worthwhile.
| A．Following, will spend, is | B．Followed, spent, was |
| C．Follow, spent, will be | D．To follow, spending, has been |