18. Choose the proper forms of the verb. These goods ...from foreign countries. a) obtain b) are obtained c) obtained d) are c

The correct form of the verb is:

1. are obtained

Explanation: The subject 'These goods' is plural and the sentence is in the passive voice, as the goods are acted upon. Therefore, the plural form of the verb 'to be' ('are') followed by the past participle ('obtained') is required.