21. Believe it or not, Levy’s sister suddenly _____ tears when we were eating.
A. burst out B. burst into C. broke into D. brought out
22. We’ve _____ sugar. Ask Mrs. Jones to lend us some.
A. run out B. run short C. run out of D. run off
23. I don’t really teach this class. I _____ until Alice returns from the United States on the exchange program with Jenks High School
A. just help out B. have just helped out C. will just help out D. am just helping out
