未知题型 We wanted to go out yesterday but the weather was terrible. If it ______ a nice day, we ______for a picnic.A．had been; would have goneB．was, would goC．were; would have goneD．would be; would go

未知题型 世界上第一部论述教育教学问题的著作是（ ）。

未知题型 - It’s been a wonderful day.- Yes, fantastic. We’ve had no______with anything. Everything’s been perfect.A．obstaclesB．questionsC．harriersD．problems