There is no hurry. You can take your time ______ those exercises.
A. doing
B. to do
C. done
D. to be doing
不属于常用的浸出方法的是
A. 煎煮法
B. 渗漉法
C. 浸渍法
D. 醇提水沉法
E. 超临界提取法
Every child gave Grandma Lin a present, 9
A. did he
B. didn't they
C. didn't he
D. did it
Not only (there is) (a wide range of) prices for goods in the city, there is (also) a wide range in the quality of goods (on sale).
A. there is
B. a wide range of
C. also
D. on sale