（1）During the Olympics，the heavy things were carried by       .
A.smart robots
B.some players
C.strong volunteers
（2）If the players felt tired，they could have a rest in       .
A.a post office
B.a car store
C.a driverless bus
（3）All the people in the Olympic Winter Games needed to have COVID-19 tests       .
A.every day
B.every two days
C.every week
（4）Sports centers in Beijing used some robots to make sure that everyone was       .
A.strong and healthy
B.healthy and safe
C.strong and safe
（5）People wore body temperature checks       .
A.on their heads
B.on their arms
C.on their legs