Open the brackets.put the verbs into present perfect.1.i never (to eat) caviar.2.we (not to be) to spain yet.3.she (not to write) to me since last summer.4. my friend and i (to see) an interesting film recently. 5. they (not to have) a holiday this year.6.my elder sister just (to come ) back.7. my father already ( to read) these magazines.8. the pupils ( not to do) exercise 5 yet.9.his mother never ( to translate) such difficult articles. 10. i (to call ) him several times this week.