It was the color of the material _____ he was surprised at.
It was the color of the material \_\_\_\__ he was surprised at.
宾语
Mary found _____ extremely difficult to pass the examination.
Mary found \_\_\_\__ extremely difficult to pass the examination.
We think it possible _____ the local government will be able to solve the housing problem.
We think it possible \_\_\_\__ the local government will be able to solve the housing problem.
I’ll tell you _____ he told me last week.
I’ll tell you \_\_\_\__ he told me last week.
You must have been troubled by when to say “I love you” because it is one of the greatest puzzles in our life.
You must have been troubled by when to say “I love you” because it is one of the greatest puzzles in our life.