17,19,22,27,34,( )
A.21
B.23
C.45
D.27
参考答案:C
He spent two hours ______ his homework last night.
A.to do
B.doing
C.did
D.do
如果学校在家的东北面,放学时我们要向哪面走?[ ]
A.东南
B.西北
C.西南
D.东北