I have his address, so I did not have any ________ his house.A. difficulty finding out B. difficulty finding C. difficulty looking for
he is very young, he can do many things.
------How often ______ she exercise? ------Twice a week.
Which do you like _______, English or Chinese?
The book is_______. I feel_____.
---Who teaches______singing? ---Nobody, I learn it by_______.