单选题 If darkness or night（ ），it becomes dark and day changes to night.

单选题 The politician attempts to keep the favor of the voters. The word "favor" here means ( )

单选题 The foundations will have to be （ ）to prevent the house from sinking further into the ground.

单选题 Consultants who have easy access to the president are those who have ( ) the president.

单选题 In the first（ ）, the camera moves slowly across the room.

单选题 The material that resists heat will ( )

单选题 A helicopter（ ）the final section of the bridge into place.

单选题 Our boxes are in （ ）and should arrive tomorrow.