1. what you (learn) ........since you (come)........? How many new friends you (make) ........? I hope you (meet, already) ...... a lot of interesting people.
2. Since classes beagan, I (have, not) ......much free time. I (have)...... several big test to study for
3. Last night my roommate and I (have)......some free time, so we (go)..... to a show
4. I admit that I (get)... ..older since I last (see)......you, but with any luck at all, I (get, aslo)....wiser.
5. Since the beginning of the twentieth century, medical scientist (make)......many important discoveries.
6. Libraries today are diffrent from those in 1800s. For example, the contents of libraries (change)......greatly through the year. In the 1800s, libraries (be)....simply collections of books. However, today most libraries (become)...... multimedia centera that contain tapes.
Simple past or present perfect tense