( )(7)We have two new friends ___ our class .A. in B. at C .on
Can I have some bread?A.Sorry, you can’t. B.No I can’t.
What are you doing?A.I’m making a cake. B.I’m making noodles.
What are they doing? They are .A.playing chess. B.doing taijiquan.
What is he doing? He’s .A.playinga toy train. B.taking pictures.
Look at the people .A.on the lake. B.under the tree.