—Listen! Someone is singing in the next room. Who ____ it be? Is it Li Wei?—No, it ______ be her. She is at school now.
— Thank you very much for the present you sent to me. — __________.
— What’s the matter? —I am having trouble __________ who has taken my book.
The more you read, __________ you will get.
The Shutes haven’t decided __________ to go there for a field trip this weekend.
Chiang Mai (清迈) __________ one of the hottest tourist destinations for Chinese since the movie Lost in Thailand (《人再囧途之泰囧》) was shown.