Carbon dioxide, which makes a________between us and the sun, prevents heat from getting out of the atmosphere easily, so the earth is becoming warmer.
| A．difference | B．comparison |
| C．connection | D．barrier |
Early ＿＿＿the morning of May 1, we started off＿＿＿the mountain village.
| A．in； for | B．in； t? | C．on；／ | D．on； for |
He divided the sweets＿＿＿the children who were divided ＿＿＿three groups.
| A．in； in | B．into； into | C．between； in | D．among； into |
The pianist began to play and the girl in red began to sing ＿＿＿＿the music.
| A．with | B．along | C．through | D．to |
The touch they had both kept in ＿＿＿many years broke.
| A．for | B．on | C．into | D．with |
He climbed silently＿＿＿＿＿＿seizing the thief＿＿＿＿＿＿.
| A．in the purpose； by surprise | B．with purpose of； surprisingly |
| C．with purpose of； surprisedly | D．with the purpose of； by surprise |