---- Is Ann knocking at the door?--- No, it ______ be Ann. She has gone to Beijing.
James is looking ________ his cat everywhere. Have you seen it ?
It’s not always necessary to look up the words ________ the dictionary while reading. Sometimes we need to guess.
Hangzhou is famous _______ producing silk in China.
—Guess, how much does it cost? —I think it costs 15 and 20 dollars.
—When did your uncle arrive ____ China? —He got to Guangzhou ____ the morning of the 16th of April.