【单选题】
将二进制数10001B转换为十进制数应该是_______。
【单选题】
10.He teaches____math.
【单选题】
18.The tie doesnt ____ my shirtnvery well
【单选题】
16.I dont have to introduce the boy to you ___-you know him.
【单选题】
15.Please drop in whenever you can.. I’d like to keep _________ touch..
【单选题】
11.Here is a letter_________you.
【单选题】
13. A fire broke out at the school but the teacher were able to lead the ___________ children to safety.
【单选题】
17.I dont think we can finish all the work before Friday, ____we?
【单选题】
20.Nice day,isnt ________?
【单选题】
19.Though she talks little, she has made _______ friends here.