单项选择题
A. to B. by C. for D. on
They found the lecture hard ()A. to be understoodB. to ...
单项选择题They found the lecture hard ()
A. to be understood B. to understand C. for understanding D. to have been understood
The story he told us was very ()and we wereA. moving, m...
单项选择题The story he told us was very ()and we were
A. moving, moved deeply B. moved; moving deeply C. moving; moved deep D. moved; moving deep
The water at the bathing beach became()by refuse from t...
单项选择题The water at the bathing beach became()by refuse from the factory.
A. pollute B. polluted C. polluting D. being polluted
