宾语
Mary found _____ extremely difficult to pass the examination.
Mary found \_\_\_\__ extremely difficult to pass the examination.
Immigrants have to adapt themselves culturally and physically to the new surroundings _____ they have moved.
Immigrants have to adapt themselves culturally and physically to the new surroundings \_\_\_\__ they have moved.
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.
It was in their London branch _____ we met and discussed the issue.
It was in their London branch \_\_\_\__ we met and discussed the issue.