3 Complete the sentences as in the example. Long formShort form1 L. . . am. . . singing. I'm singing. 2 Webrushing our teeth. ( Webrushing our teeth. 3 Hedoing his homework. ♡ Hedoing his homework. 4 Itflying. InItflying. )5 They are not. . . drinking tea. (X) They. . . aren't. . . drinking tea. (x)6 Yousitting. (*)Yousitting. (7 Sheswimming. )Sheswimming. ~8 It. . barking. (*)Itbarking. (*)