1.29.

A. 　 attended

B. 　 missed

C. 　 escaped

D. 　 changed

A. 　 writes

B. 　 wrote

C. 　 writing

D. 　 written

A. 　 so

B. 　 or

C. 　 but

D. 　 for

A. 　 making

B. 　 make

C. 　 made

D. 　 to make

A. 　植物进化与维管束

B. 　植物桥梁:维管束

C. 　维管束与植物生长

D. 　植物的面包:维管束

A. 　 disturbing

B. 　 teaching

C. 　 forcing

D. 　 reminding

A. 　looked

B. 　 sat

C. 　 travelled

D. 　 lived