Some people can never go above 4,000meters because their body is unable to ______ to these extreme conditions.

Lily and Lucy are twins, they _____ good girls, they often help others.

________ with so many fans of the famous star, the stadium is hard forus to enter[ ]

re determined to go into the dark cave, ______my warning of danger.

I have a tight budget for the trip, so I’m not going to fly _the airlines lower ticket prices.[ ]