Some of the foreigners (0) have lived (LIVE) in Oxford here for quite a long time, but they (1) do not speak (not SPEAK) English very well. My friend, Peter, for instance, who (2) comes (COME) from Basle, and came here a year ago, still (3) speaks (SPEAK) with a strong Swiss accent. He (4) came (COME) here on business. Although I (5) have been (BE) here only three months, I (6) have picked (PICK) up enough English to be able (7) to correct (CORRECT) Peter frequently, but as I (8) learned (LEARN) English at school here, I have an unfair advantage over Peter, who is a good fellow, and (9) is (BE) most helpful in (10) showing (SHOW) me about London during the first weeks of my stay.

1. do not speak: Present simple negative (habitual action)
2. comes: Present simple (fact)
3. speaks: Present simple (habitual action)
4. came: Past simple (action that happened in the past)
5. have been: Present perfect (action that started in the past and continues to the present)
6. have picked: Present perfect (action that has just happened and is relevant now)
7. to correct: Infinitive (purpose)
8. learned: Past simple (action completed in the past)
9. is: Present simple (state of being)
10. showing: Gerund (after preposition "in")