A) Having a good knowledge of its customs.B) Knowing some key people in tourism.C) Having been to the country before.D) Being able to speak Japanese.

______, he realized he made the right decision. A: Before long B: Long before C: After D: Before

第19题: Before 14:00.|Before 15:00.|Before 16:00.|Before 18:00.

Toms parents will be back from London . A: long before B: before long C: before soon D: soon after

______ so many people put of work as today. A: Before have never there been B: There have been never before C: Never before have there been D: Have there never before been

Itwas_____lastyear______hecametorealizetheimportanceoflearningEnglish. A: until;before B: that;until C: until;that D: before;until

【单选题】()4. ______ A. Was; before B. Is; before C. Was; after D. Is; after A. was before B. is before C. was after D. is after

 ＿＿＿＿your father at work the day＿＿＿yesterday﹖ A: Was; before B: Is; before C: Was; after D: Is; after  ．

（）your father at work the day（）yesterday. A: Was; before B: Is; before C: Was; after D: Is; after

Limit pricing requires the monopolist to maintain a low price before entry occurs ( ). A: high, after B: high, before C: low, before D: low, after