. At a rough estimate(估计), Nigeria is ____ Great Britain.
---Do you mind choosing Peter to be the new chairman? ----_______.
You must have been caught in the traffic jam yesterday, ______you?
----I’m sure Andrew will win the first prize in the final.----I think so. He ______for it for months. A. is preparing B. was preparing C. had been preparing D. has been preparing
Better wear special clothing, a helmet and a life jacket, just ______ your raft gets upside down or even sinks.
I found that the homework was ______ I used to get in my old school.