_____is too hard _____ a good solution to this problem.
A. It; find
ing
B. This; to find 
C.
This; finding D. It; to find
Bruce_____ football, but he is on the volleyball team now.
A. was used to play B. used to play
C. used to playing D. was used playing
I still remember the museum_______ we visited last year.
A. who 
B.
that C.
what D. whom
---What would you do if _________ eighty-year-old man fell down in front of you?
----I don’t know. Maybe I will help him.
A. a B. an C. the D./
—Can you understand me?
—Sorry. I can _________ understand what you’ve said.
A. nearly B. easily C. hardly D. exactly
-- _____ to a Disneyland Park?
-- No, never. But there will soon be one in Shanghai. It will be much more convenient for us to have fun there.
A. Have you gone B. Have you been C. Did you go D. Will you go
