Clearly, in a system _________ every decision is made on the basis of tradition alone, it may be difficult to achieve progress.

you going to travel during this summer vacation— No, I’ll have to do some part-time job for my study__________, there’s a disease spreading

Mr. Ma has gone to Guangzhou on business.—Really Do you know

Which of the students_____the examination?

We can see no clouds in the sky. Therefore, there’s no doubt ______ it will be fine tomorrow.[ ]