You don’t know ______ I want to see you again. It’s a year since I last saw you.

Though Jane speaks Russian well, she thinks it necessary to learn ___ foreign language.

(2013·陕西五校二模)—Will you take these shoes?—No, they don't fit me. Show me ________.

We can no longer ________ to consider water an almost free resource that we can use as much as we like.

When it comes to job interviews, first ________________ including the way you speak and dress, are extremely important.