Here are the verbs properly filled in with either the present perfect or past simple tense:

**Question 7:**
We **have studied** almost every lesson in this book so far.

**Question 8:**
We **studied** a very hard lesson the day before yesterday.

**Question 9:**
My uncle **moved** to Da Lat in 2005.

**Question 10:**
I **had** a little trouble with my car last week.

**Question 11:**
I don't know Carol's husband. I **have never met** him.

**Question 12:**
We **watched** an interesting program on television last night.