3. Complete the sentences with the present perfect or past simple 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?
