填上适当的词,完成句子 1.He left the classroom ( ).I didn't even know when he left. 选择 1.This box is much ( ).I can't carry it. A.heavy B.heavier C.more heavy 2.Taking buses in Beijing is ( ) than taking a taxi. A.more cheap.B.much cheaper C.a little cheap 3.We can do it better with ( ) and( )twin sister A.less fewer B.fewer less C.fewer fewer .