Open the brackets using present perfect. the students (improve) their english? she (become) really beautiful. this man (invent) many useful gadgets? people (cause) much destruction to the planet. i (never surf) in the pacific ocean. the class (do) 5 tests this month. allison (find) a few problems with your plan. you (consult) with doctors about his illness? i (not meet) debbie for ages. since previous year, we (not make) any profit. she (be) sick since sunday. you (be) away for 2 weeks. he (hate) cheese since childhood? mark and katie (not be) together for two years. i (like) mango since my last trip.