过去完成时态综合例题解析：
１--What are Mr and Mrs Black doing ?
---They _____ tea in the garden.
A. are drinking B. drank C. have drunk D. drink
2. My mother often asks me _____early .
A. get up B. got up C. getting up D. to get up
3. Soon Wu Dong ____ up with Li Lei, then they were neck and neck.
A. taught B. caught C. bought D. brought