Do you have a tennis ball —____________. But Jim has one. Let’s ask Jim for help.

8, three American scientists invented ____transistor, which is ____ small electronic device to control an electriccurrent

Have you heard of Wang Meng? —Yeah, she ______ have done better. She won China’s first gold medal at Turin.

mark was considered to be quite ______, becauseit deepened the gap between two parties and caused more conflicts

The music is too loud,would you mind______