as a mental disorder hascaused much debate

______ useful robot! It can help with the housework like a human servant.

________students are required to take part in the boat race.

MrSmith is said to have retired and he is living in the country now.—- YesHe ________ in our factory for 35 years! What a good worker!

She eats a lot of vegetables and fruit every day to ______ healthy.