30.This machine, ______for many years, is still working perfectly. A. after which I have looked B. which I have looked after C. that I have looked after D. I have looked after
举一反三
- 【单选题】3. Young children must by adults. A. look after B. is looked after C. looked after D. be looked after A. look after B. is looked after C. looked after D. be looked after
- The manager promised to have my complaint ___________________. A: looked through B: looked into C: looked over D: looked after
- He ought to have looked after his father, _______?
- I looked after three ______ in the morning.
- Cathy didn't go to Tom's birthday party last night because she ______ the baby for her sister until 9:30. A: must have looked after B: would have to look after C: had to look after D: should have looked after