SIMPLE SENTENCE: INFINITIVE
1. From the inception of his long and distinguished career, Frank Lloyd Wright was concerned with how __________ architecture with topography.
did he integrate
2. Legendary home of the Nabateans, Petra is known ________ housed more than 15 ,000 residents at one time.
3. Unless an observer knows ________ an eclipse properly, severe retinal and cornea damage can result.
how to observe
to have observed
Answers: B , A, C
source:PBT STRUCTURE AND WRITTEN EXPRESSION