--- When did you meet your English teacher?--- While I _________ a bike along Jiaomen River.
He finished his work in 30 minutes. For the ____of the time, he played with his dog.
---What shall we do this weekend?---You can go swimming, hiking, or _______else you enjoy doing.
--- It’s said that scientists have ________ a way to deal with Influenza A/HiN1.--- Really? That’s great!
--- Peter has good grades in all his subjects, but he never shows off.--- I agree. He is very ________.
---Here are three books on history.Which one would you like to borrow?--- ______. You see,I’m interested in geography these days.