The book was written in 1946, __________ the education system has witnessed great charges.
| A．when | B．during which | C．since then | D．since when |
—The cars give off a great deal of waste gas in the streets.
—Yes. But I'm sure something will be done to ________ air pollution.
| A．reduce | B．remove |
| C．collect | D．warn |
It's a headache trying to ________ in a strange, new town. I will just take a taxi and avoid all the trouble.
| A．settle down | B．work out |
| C．get around | D．hold out |
Many people headed for the water to ________， including rivers, bays in the seaside of the country.
| A．put off | B．cut off |
| C．pull off | D．cool off |
This picture was taken twenty years ago. I wonder if you can ________ my younger brother.
| A．find out | B．pick out |
| C．look out | D．speak out |
Those who want to say anything more ________ your hand and then ________ to speak.
| A．arise; raise | B．raise; rise |
| C．raise; arise | D．rise; raise |