单项选择题

He said that he（）to the office the day before yesterday.

A．didn't go
B．hasn't gone
C．wasn't going
D．hadn't gone

<上一题目录下一题>

热门试题

单项选择题

Which of the following is NOT concerned with the elephants（）

A．Elephants today are restricted to Africa and parts of Southeast Asia.
B．They occupy a wide range of environments: marshes, forests, grasslands, mountains, and deserts.
C．They also need a lot of drinking water and so are restricted to areas with inadequate water.
D．They need great quantities of food to support their massive size.

单项选择题

Which of the following is NOT true according to the passage（）

A．The four blood types are known as A, B, AB, and O.
B．Blood type A contains red blood cells that have a substance A on their surface.
C．Blood type B contains an antibody directed against substance A.
D．Blood type AB contains antibody, but red cells in this type of blood neither contain both A and B substances.