21. The president has ________ eight-year-old daughter£¬who has ________ gift for painting.

A. a; the                                            B. an; the

C. an; a                                             D. a; a

22£®Speak slowly£¬please£¬I can hardly ________ you£®Which of the following is wrong?

A£®catch                                           B£®follow

C£®understand                                   D£®hear