Mary is good at _________.A. sing B. sings C. singing
( )He is good at _________. A.swims B.swim C.swimming
( )_________ he like surfing the Internet? No,he . A.Do;don’t B. Does;doesn’t C. Does;don’t
( )She _______ a lot of friends. A.has B. have C. having
( )Helen likes _______ in the music room. A.play the piano B. plays the piano C. playing the piano
( ) ---Can we ________ this Sunday? ---OK. A. go to climb B. go climbing C. goes climbing