单选题：The defence works ______ built long ago to keep the enemy aw

题目内容：

The defence works ______ built long ago to keep the enemy away． A．were
B．has been
C．had been
D．was

参考答案：

答案解析：

What the children in the mountain village need ________ goo

What the children in the mountain village need ________ good books． A．is B．are

分类：成人英语三级题型：单选题

下列各项费用中，应计入建筑安装工程施工机械台班单价的是（　　）。A．大型机械设备进出场费 B．引进设备检验费 C．临时故障排除费 D．机器损坏保险

分类：成人英语三级题型：单选题

某施工机械预计使用9年，使用期内有3个大修理周期，大修间隔台班为800台班，一次大修理费为6500元，则其台班大修理费为（　　）元。A．1．88 B．3．75

分类：成人英语三级题型：单选题

It's time ____ about the traffic problem downtown．A．something were done B．anyt

分类：成人英语三级题型：单选题

I ____ Professor Smith had not told me this question．A．believe B．wish C．deeply

分类：成人英语三级题型：单选题