series
His pale face _________ a reluctant smile when he heart the news.A took on B came on C was taken on D turned into
________one scientist has pointed out, children’s skulls are not fully developed.
--- Hi, Kate, can I use your bike for a while this afternoon?--- Sorry.??__________?.
---Do you know who invented ________ telephone?---No. But it is really________ most important invention.
—— I’m thinking of tomorrow’s math test. I’m afraid I can’t pass it. ——______. I’m sure you’ll make it.