Some students are so ______ that they often make mistakes in their homework.
of his timebeen spent on studies every day.
energy,turn off the water when you are brushing your teeth.
一I want to borrow the book,but I don’t know how long it may. 一For two weeks.
I’m amazed to hear from my school teacher again. ___, it is ten years since we met last time.
—Look! Here comes the bus and I have to go now. Thank you for seeing me off. —Goodbye, and!