We . . . . . . . . football for two hours and . . . . . . . . to a restaurant for a meal, afterwards.

In the given sentence "We played football for two hours and went to a restaurant for a meal, afterwards," the verbs "played" and "went" are the correct choices to fill in the blanks.

"We played football for two hours" - "played" is the simple past tense of the verb "play," indicating an action that happened and was completed in the past.

"and went to a restaurant for a meal, afterwards" - "went" is also the simple past tense of the verb "go," which correctly describes an action that occurred in the past.

Both actions, playing football and going to a restaurant, are completed events in the past, so the simple past tense "played" and "went" are the appropriate choices for this context.

The other options do not use the correct verb forms for the given sentence. Option A, "are playing/go," uses the present continuous tense with the base form of the verb, which is not suitable for the past context. Option B, "play/are going," combines the simple present tense with the present continuous tense, which is grammatically incorrect. Option D, "have played/were going," uses the present perfect tense and the past continuous tense, which do not match the simple past tense required. Option E, "have been playing/had gone," uses the present perfect continuous tense and the past perfect tense, which are not appropriate for this sentence.

Therefore, the correct answer is "C. played/went."