单项选择题
A. chat with Jack socially. B. get help in the course. C. hand in their assignments. D. practice giving interviews.
A.He can’t meet his friends. B.The flight goes without him. C.He has to pay more than 795 pounds. D.He can’t stop at Hong Kong then.
A. mothers of infected babies. B. infected children and women. C. infected children in cities. D. infected women in cities.