National parks are important for preserving many animals, which would _______ run the risk of becoming extinct.
Some of the students have already learned enough English to ____a conversation with a native English speaker.
-What an amazing story! It’s the most impressive story I’ve ever read.-But I’m sure it won’t interest ____.
-Have you read the novel?-Yes. I ____it three times while I was in university.
What I want to do most is to have____ quite interesting book, and ____ time to enjoy it.
_____ tomorrow, our ship will set sail for Macao.