5道英语单选题He is over fifty,but he looks as if he __________only

5道英语单选题He is over fifty,but he looks as if he __________only He looks as if he is ill为什么用if 、 looks as if he was dead 和he looks as if he is dead的区别. Mr Liu is over fifty,but he never stops___(learn) I don't know he was in ( ).He looks as if he were over( ) he is fifty ,but he doesn't _____ it .A,look as it .B.look a Dick is over sixty,but he looks young for his age.He is alwa I have no idea how old he is ,but he looks ( well) over four 5道英语单选题,1.He had really been a sociable type,so he is not ac He looks as if he ( ) ill for a long time he looks as if he is tired.是状语从句还是表语从句. he looks as if he is tired.是状语从句还是表语从句?