Scientists say it may be fiveyears ______ it is possible to test this medicine on human patients．

_____ do you think will teach usmath next term

Do you know_____——He is a dentist.

ping’s report, ” a smile on his face, hecontinued, “_____ to several hot topics, discusses how to increase peasants’income.”

I believe in you, I don’t _______your viewpoint_______ she is failing to find a well-paid job again.