21. ---Do you feel like ______ there or shall we take a bus?
---I’d like to walk. But since there isn’t much time left. I’d rather we ______ a taxi.
A. to walk; hire B. walking; hire C. to walk; hired D. walking; hired
22. We have been told the outcome of the negotiations, but we shall never know what _____ on behind the scenes.
A. goes B. will go C. went D. will have been going
