______ can I get to the National Museum?[ ]
A. What
B. Where
C. How
D. Which
答案:C
— The last one _____ pays the meal.
— Agreed! [ ]
A. arrived
B. arrives
C. to arrive
D. arriving
E1有多少个时隙?这些时隙都可用来传输业务吗?请简述原因。