I would appreciate it ________ you call back this afternoon for the doctor"s app

题型：不详难度：来源：

I would appreciate it ________ you call back this afternoon for the doctor"s appointment.

A．until

B．if

C．when

D．that

答案

解析

if引导条件状语从句。

举一反三

Scientists generally agree that Earth"s climate will warm up over the next 50 to 100 years ________ it has warmed in the 20,000 years since Ice Age.

A．so long as	B．as much as
C．as long as	D．as well as

题型：不详难度：| 查看答案

(2013·北京，30)I took my driving license with me on holiday，________I wanted to hire a car.　　　　　　　　　　　　　　　　　　

A．in case	B．even if
C．ever since	D．if only

题型：不详难度：| 查看答案

(2013·湖南，23)You must learn to consult your feelings and your reason________you reach any decision.

A．although

B．before

C．because

D．unless

题型：不详难度：| 查看答案

(2013·江苏，28)In the global economy，a new drug for cancer，________it is discovered，will create many economic possibilities around the world.

A．whatever　

B．whoever

C．wherever

D．whichever

题型：不详难度：| 查看答案

(2013·江西，28)She says that she"ll have to close the shop ________ business improves.

A．if

B．unless

C．after

D．when

题型：不详难度：| 查看答案