Trust your friend? a)do b)does c)is какой правильный вариант ответа? ?

1)we recommend that you read the rules for the tourists.

2)   for a ride abroad in most countries you need a visa.

3) each tourist must fill out a customs declaration.

4) if you have any questions about what is necessary specify in the declaration, you should seek the assistance of customs officers ..

5) if you have any problems, you should contact your travel agent.