From this day , I will be more careful when crossing the street.
The girl ___on the ground ___to me that she had ____the book on the shelf.
______himself to his research on the IT technology, he soon made a breakthrough.
_____the cause of the oil leaks, the specialists can not draw a conclusion before completing a thorough and detailed investigation.
-–What do you think of the lecture?--____but interesting, but I’ve managed to survive it.
English teachers are supposed ______their students a test in class, even after class, ______better teaching results.