_________ birthdays are there in August?[ ]
A. How much
B. How old
C. How many
答案:C
主要作用于M期的抗癌药()。
A.氟尿嘧啶
B.长春新碱
C.环磷酰胺
D.泼尼松龙
E.柔红霉素
—Is Emma sister?
—Yes, _ is. [ ]
A. your; she
B. her; I
C. his; he
D. your; he