I. Put the verbs in brackets in the correct tense-form. 1) Sometimes I (play) video games by myself, but I also invite friends over to play.
2) If you (not/know) what is wrong with you, then ask a doctor.
3)...it ... (stop) raining yet?
4) Paul is a singer in a band. - How long ... he ... (sing)?
5) Where is Jack? – He (do) his homework.
6) The children (plant) trees for two hours.