Shirley _____ a book about China last year, but I don't know whether she has finished it.
—Should I lock the lab before I go home?—_ _.I'll check it myself later.
Thanks to our ___ schedule, we got our task accomplished ahead of time.
—Have you heard that he was admitted into Beijing University?—Is that true? And I'm glad that his efforts at last ___.
With the rapid development of medical science, we ___ more new drugs used in the treatment of cancer.
The teacher wants his students to know more about modern science and tries hard to develop a(n) ___ about nature among his students.