The use of “contained” (L 2) and “contain” (L 6) indicates:

Read the text to answer 39 and 40.

One day an Indian gentleman, a snake charmer, arrived in England by plane. He was coming from Bombay with two pieces of luggage. The big of them contained a snake. A man and a little boy was watching him at the customs area. The man said to the little boy “Go and speak to the gentleman”. When the little boy was speaking with the traveller, the thief took the big suitcase and went out quickly. When the victim saw that he cried, “Help me! Help me! A thief!” A police officer was in this corner whistle but it was too late. The thieves escaped with the big suitcase, took their car and went in the traffic. Later they had a big surprise because the suitcase contain a snake.

(ELLIS, Rod. Second Language Acquisition. Oxford University Press. Pag. 15-16.)