23. The day ______ she spent with us was never to be forgotten.
Choosing the right dictionary depends on ______ you want to use it for.
I don’t think the experiment is ______ failure. At least we have gained ______ experience for future success.
That year his total income, with his reward ______, _______ 1500 dollars.
-----What do you think of the girl?------Not only _______ hard but also_____ very charming.
----- __________it be Li Ping who broke the glass?---- No. It __________ be Wu Dong who did it.