I saw him in the library yesterday. He a book at that moment.
A:reads
B:is reading
C:was reading
D:will read
“手里没苹果,感觉不入流”,这一现象主要反映的是()
选出下列每组单词中和其他两项不同类的—项。
①____A.walking B.sing C.swimming
②____A.mine B.her C.yours
③____A.four B.third C.fifth
④____A.Monday B.Tuesday C.Easter
⑤____A.sushi B.plate C.bread
直角△ABC中,∠BAC =90°,D、E、F分别为AB、BC、AC的中点,已知DF=3,则AE= ____ .