W: Hello, Mr. Smith, this is Ruth Harber. May I speak to my husband
M: Mr. Harber is in the lab now. And then he’s going to the library. I’ll tell him to call you at home.

Where is the woman’s husband now()

Anthropologists usually study simple, unindustrialized ...

单项选择题Anthropologists usually study simple, unindustrialized societies because the number of()is limited.

We should do everything in our power to develop () alte...

单项选择题We should do everything in our power to develop () alternatives to petrol.

I didn't help him. I would have ()I didn't have the mon...

单项选择题I didn't help him. I would have ()I didn't have the money.