问题

British people say “please” and “thank you” all the time some people in Asia may think it unnecessary.
A:while
B:because
C:unless
D:since;
B:because
C:unless
D:since;
正确答案是:
同类题型
The number of smokers, ________ is reported, has dropped by 17 percent in just one year..
Theprofessor in the letter is from Shanghai
Millie often _____ a special costume at the party.
_____ suddenly occurred to me _____ I had toattend an important meeting in Shanghai the next day
How many drivers are there in your taxi company— About thirty. And one third of them women drivers.