单项选择题
Traveling can be fun and easy. A vacation trip to another country is especially (21) when the traveling conditions are good. Good traveling conditions (22) a comfortable mode (方式) of transportation, knowledge of the (23) language, familiarity (24) the customs and habits of the people in the country, and pleasant traveling (25) . All of us have iad nice trips (26) this.
Most of us have also had trips! that we would (27) to forget. Many conditions can pro duce a bad! (28) experience. For example, if the four conditions (29) above do not exist, we will probably have a bad experience, (30) at best a difficult (31) . Students who travel to a (32) country to study often have a difficult trip. They usually travel (33) They don’t know the language of the new country (34) . They often arrive in the new country (35) a judge international airport. From the airport, they need to (36) their way to their school. Maybe they need to (37) airplanes, to! take a bus, a train, or a taxi. They need to do all this in a country (38) everything is unfamiliar. Later, after the experiences are (39) , they can laugh. But at the (40) , they feel terrible.
A.at
B.to
C.on
D.from