John said that he________ if you ______ help him. I will if I have time.

We walked _____ the village, but found nobody in it. [ ]

Nowadays when tourists pay a visit to Xi’an, _______ for them to take public transport.

Thewalkersneedalotofwater______thewalk. [ ]

Mr. White came to our school in 2008, and since then he ______ us English.