________ every student aware of the importance of study, they would study efficiently.
When Madam Cuirie did the science experiement again, she was more careful where she _____ a mistake.
Before she realized what happened, she got ___ on the head and lost consciousness.
------I’ve been told that John ________ from his journey to India. What about visiting him tonight? ------- Great. I’ll call for you at 6:30pm.
—Do you like the material? —Yes, it ___________ very soft.
—Where is Xiao Wang? —I don't know.He__________ be in the library.