航行灯的颜色正确的是（）。
A.左红
B.左绿
C.右绿
D.尾白
参考答案：A, C, D
What's the weather ____________ today? It's sunny.[ ]
A. /
B. do
C. like
Yesterday we _________ gifts.[ ]
A. buy
B. bought
C. put
