Choose the closest paraphrased version after each of the followi

Choose the closest paraphrased version after each of the following sentences or the italicized part.
While travelling for various speaking engagements, I frequently stay overnight in the home of a family and am assigned to one of the children's bedrooms.
A、When I am invited to make speeches in different places…
B、When I have to travel to host wedding ceremonies...
C、When I go to different places to attend meting...
D、When I am speaking for tourism industry…
【正确答案】：A