3. Comlete the sentences with the present perfect or past simle forms of the verb in CAPITALS.

2. GO
A. My friend ________ to a computer workshop yesterday.
B. My friend ________ to a few computer workshops.

3. NOT EAT
A. We ________ a lot of food today so we're hungry now.
B. We ________ at the party last Saturday. We were busy dancing!

4. PARTICIPATE
A. Kelvin _________ in research and then the university paid him some money.
B. Kelvin _________ in many research projects already.

5. FINISH
A. ______ you _______ your work yet?
B. ______ you _______ your work last week?