.Look! The students _____ the classroom.A.clean B.are cleaning C.are clean
It took her some time ________ Chinese in class.
_______ exciting film it is !
Tom often thinks ________ talking.
— Do you often study with a group? — Yes. I find really helpful to study that way.
— Does my question sound enough? — I don’t think so. You can ask more by using “could” instead of “can”.