—There is a pen on the ground. Is it Li Long’s?—It Li Long’s. He went to Beijing many days ago.
________ the afternoon he often plays computer games.But ________ yesterday afternoon he did some washing.
My brother spent one hour ________ me with my homework.
—Have a nice weekend! —________.
—Who cleaned the classroom yesterday? —Kevin ________,I think.
—________ did she do last night? —She studied math(数学).