The students were singing an English song _______ Mr. Xiang came in the classroom.A. after B. before C. when
—What are those?— are books.
His parents __________ everything good that he does.A. take pride inB. be proud ofC. deal with
People should not cross the street ______ the traffic lights turned green.A. when B. until C. after
---Did he ______ wear glasses? --- No, he _________.A. used to; isn’tB. use to; didn’tC. use to, wasn’t
I used to be afraid of ________ a speech in public.A. giving B. to give C. give