I had just started back for the house to change my clothes ____

单选题 I had just started back for the house to change my clothes __________I heard voices.

A．as
B．when
C．after
D．while

参考答案B

解析:

单选题 __________enough time and money, the scientists would have been able to discover more in this field.

A．Giving
B．To give
C．Given
D．Being given

单选题 Looking around the small village, he felt as though he__________from an evil dream.

A．woke
B．wakes
C．would wake
D．had woken

单选题 The machine has an enormous advantage__________it is equipped with an automatic control system.

A．since that
B．in that
C．at that
D．so that