As we know, the Changjiang River is one of _______rivers in the world. A. long B. longer C. the longest
He sings ________ and he is a __________ singer(歌手).
—_______________? —At a hotel.
—What vegetables do you like? —I like _______.
____________ Do you have a pen?
—____ music her favourite subject? —Because she thinks it is relaxing.