36..___________that she has gone to the United States?37.
Though ______, many laws of nature exist.
While prices are rising so fast,many people are working out ways to________their expenses.
The course about Chinese food attracts over 100 students per year, ________ up to half are from overseas.
here yesterday, he could have seen Jackie Chen.
Among the many dangers_-- sailors have to face , probably the greatest of all is fog .