—We________gas.I'm afraid we can't go much further.—I know there's a gas station ahead.Sure it will last us until we get there.
The hall __ we saw the film was very clean.
--Let us see your pass, ___. ---Sure.
I can't __ the difference between them because they look like the same.
He ___ work in Hangzhou, did he?
Do you know __ to deal with this kind of person? A, how B. which C.what D. that