We must keep offthe forest fire if there is one. It's dangerous to stay near it.( )
catch up with
put off
keep up with
stay away from
He will call you when he in Beijing.
—What did our geography teacher say? —She told us that the earth _____ around the sun.
()He hardly goes to school by car, _________ he?
----________________? ----He’s very fine. Thank you.
--I can’t solve the math problem because it is too difficult. What should I do? -- _________ ask the teacher for help?