and scientists have yet to develop a magic ________ that keeps the kilos off permanently.?
举一反三
- Scientists have yet to pinpoint the mechanisms involved but have come up with several （ ）explanations.
- It can be learned from the passage that______. A: it will be difficult for scientists to develop a vaccine for women B: HIV infects women in the same way with men C: most women have contracted a variety of HIV from several men D: it will be easy to develop a vaccine for men
- The international conference keeps _________ due to the COVID-19 pandemic. (put off)
- I have no ______ and I have lost 5 kilos in the last few weeks. A: taste B: appetite
- Have you fed the dog yet?TO____________ fed yet?