22. Nguyen Hue pedestrian street has become ..........interesting place of.......entertainment,especially on Saturday and Sunday nights. A. the / the B. -/- C. the / an D. - / an 23 On ........ second day of their Chiang Mai trip, they took ......... adventure tour including elephant rides and hiking to ........... huge waterfall. A. the / an / a B. the / the / the C. - / an / a D. -/ an / - 24. In July they offer us...........enjoyable trip to............Russia to experience its diverse architecture and culture A. an / - B. the / the C. an / the D. - / - 25 Mr. Brown asked us to stop ...............and we stopped ...............to him at once A. to talk / listening B. talking / to listen C. to talk / to listen D. talking / listening