b2:1.playing 2.will visit 3.are going to have 4.does that farmer introduce 5.are wasting
b3:1.a->will 2.c->programmes 3.a->has 4.b->will have 5.b->might go
b4:1.c 2.c 3.b 4.c 5.b
b5: 1.the blue clock is older than the red one/red clock
2.the Fansipan is the highest mountain in viet nam
3.sydney street is shorter than oxford street
4.this is the first time i have ever visited a beatiful sight
5.my sister will be eighteen next week
*
1.c 2.d 3.b 4.d 5.a 6.b 7.b 8.a 9.d 10.b 11.a 12.d 13.c 14.a 15.b
