11. Mary is ill so Sue _______________ (teach) her lessons today.
12. Excuse me, I _______________ (look) for a hotel. Is there one near here?
13. _______________ (you/wait) for someone?
14. Jack, you are very careless. You _______________ (always/forget) to do your homework!
15. The cost of living _______________ (rise) very fast. Every year things are more expensive.
16. What _______________ (you/do)? I _______________ (clean) my shoes.
17. Why _______________ (not/ he/ wear) shorts? It's so hot today.
18. The neighbors are so noisy! They _______________ (always/argue) loudly.