-----This returned Chinese scholar has become one of the top experts in this field.-----Yes, I know him very well. He _____ in Africa with wild animals for eight years.
—Is the project difficult for the students?—No. Most of the relevant information ______ to them.
Working as a manager, Rebecca found it hard ______ between work and her family.
If you miss this chance, it may be years ____ you get another one.
I just heard____ bank where Dora works was robbed by____ gunman wearing a mask.
Niki is always full of ideas, but is useful to my knowledge.