1．When you visit a museum you must ask for _______ permission before taking _______ photographs inside it．

A．/; /   B．a; the C．a; /  D．the; the

2．_______achievement, last week’s ministerial meeting of the WTO here earned a low, though not failing, grade．

A．In terms of      B．In case of

C．As a result of  D．In face of

3．_______ seems to be a strong competition in China for senior high students to enter college or university．

A．It   B．There   C．What  D．That