一Oh,there’s someone knocking at the door.一 must be that naughty boy.
---Did you _____ who cleaned the classroom? ---Yes, Sam did. A. find out B. look for C. put out
Bill is so tired that he can______ walk. A. always B. hardly C. hard
Lesson14 is as _____as Lesson13 and few students can understand them clearly. A. difficult B. easy C. more difficult
---How often does she have dancing classes?---_________.A. On Saturday afternoonB. At 9 o’clockC. Once a week
Linda thought it was______ enjoyable tour and wanted to keep____dairy about it. A. a; an B. a; / C. an; a