The old sick lady entered the hospital, ______ her two sons.
—Shall I give you a ride as you live so far away?—Thank you,________.
The population of Rui’an is ________ so rapidly as to cause concern of the whole country.
Progress so far has been very good. ______, we are sure that the project will be completed on time.
________in a famous university is what most students wish for.
—Robert is indeed a wise man.—Oh, yes. Howoften I have regretted ________ his advice!