Luis is____a lot of stress right now because he has been addicted____drugs.
The doctor is trying to save the patient by every _________________ means.
Can you imagine the astronauts’___________ in space?
It is difficult to imagine his _____________ the decision without any consideration.
---- There is a story here in the paper about a 110-year-old man. ----- My goodness! I cannot imagine __________ that old.
John as well as his classmate ___________ one exam after another.