1. the / last / holiday / had / a / California / long / tourists / in / year.

`->` The tourists had a long holiday in California last year.

2. abroad / man / past / traveled / for / the /work / in / the / six / has / months?

`->` Has the man work in the past travelled abroad for six months? 

3. When did it start snowing?

 How long is it since it started snowing?

4. It is necessary for them to go on business with the journalists.

 They need to go on business with the journalists.

5. They transported the containers to the city by ship.

 The containers were transported to the city by ship.

1. the / last / holiday / had / a / California / long / tourists / in / year

=> .the tourists had a long holiday in California last year

2. abroad / man / past / traveled / for / the /work / in / the / six / has / months

 .has the man work in the past travelled abroad for six month ? 

3. When did it start snowing?

 How long when did it snow?   

4. It is necessary for them to go on business with the journalists.

 They have to go on business with the jounalist

5. They transported the containers to the city by ship.

 The containers were transported to the city by ship