21．To tell ______ truth, he is at ______ loss what to do currently．
A．/; a B．the;/ C．the; a D．/;/
22．—What present shall we offer Johnson for his birthday? What kind of things does he prefer, a football, an iPod, or an e-bike?
—_____. Let's give him an e-bike．
A．No way B．That's it C．Not at all D．It's a good idea
