Sorry，___________． What do you mean by saying "look out"？
I asked you "to be careful"， not "to look outside"（ ）
A．I can't hear youB．I can't see clearly
C．I don't notice youD．I don't follow you
Mr.Smith______ Chinese for two years.He's much better at it now.（ ）
A．learnsB．was learning
C．has learnedD．will learn
—Lily，what do you usually do after school？
—I_________exercise with my friends.（ ）
A．doB．didC．will doD．was doing
My parents and I_________ trees last Sunday.（ ）
A．plantB．will plant
C．are plantingD．planted
—Peter，what are you doing？
—Oh，I_________a report about national heroes.（ ）
A．will writeB．am writing
C．wroteD．have written
The teacher is glad to see that Tony is_______than before.（ ）
A．carefulB．more careful
C．most carefulD．the most careful