If you want to learn English well, it’s useful to _____ before class and _____ after class.A.review, previewB.preview, reviewC.review, to preview
---What _______ do you have for Daniel? --- I think he should study harder than before.
--- I take the book out? ---I'm afraid not.
It is _____ to cycle around Guilin.
My shoes are broken. They need ________.
He _____ in Shanghai for five years.