With many cities in China dreadfully blanketed by thick haze, the environmental problem is _____ Chinese people concern most nowadays.
How many years is it ______ your family moved here?
It won’t be long _____ the island ________ to our motherland.
It ______ three years since I left England.
----Which person do you mean? ----______ who wears a new gold watch.
----Do you need my ruler? ----No, thanks. I’ve got _______ myself.