单选题 There ______ a great number of rivers in China.

单选题 ______ of the Grade ______ students are boys.

单选题 —Excuse me, how does this number 2146 read? —It reads ______.

单选题 —Is there any outdoor learning in your school? —We learn outdoors once or twice every month.

单选题 Good morning, class! Today we'll learn a new lesson. Please open your books at ______.

单选题 Things made by hand are usually more expensive than ______ produced in factories.

单选题 —Bob! Is this your dictionary? —No, it isn't. Ask Sally. She is looking for ______.

单选题 —Can you come on Monday or Tuesday? —I'm afraid ______ day is possible.

单选题 There ______ a book sale in our school library once a year.