问题
We don’t know what to do next because the plan is still_ .[ ]
A: certain
B: uncertain
C: sure
D: known
B: uncertain
C: sure
D: known
正确答案是：
同类题型
Linda should join a sports club.—________.It’s good for her to take more exercise.
Jim, ________ read books while you are walking inthe street. It’s very dangerous.—OK, thank you.
Why not ____ your teacher for help when you can’t finish _____ the Story by yourself
Are you busy this weekend— Yes, my mother wants me ____the house.