Поставьте глаголы, данные в скобках, в present perfect continuous. 1. му sister (tо do) aerobics since last уеаr. 2. i (not to eat) а fried mеаl since i began to follow а diet. 3. магу (tо use) this toothpaste fоr а long time. 4. мy grandfather (not to smoke) since he visited his heart doctor. 5. i (not to drink) strong tea fоr mаnу years.