Only when according to the directions can the medicine be quite effective.A．takingB．takenC．being takenD．having 题目和参考答案——青夏教育精英家教网—

题目内容

Only when___________ according to the directions can the medicine be quite effective.

A．taking

B．taken

C．being taken

D．having been taken

试题分析：句意：只有当按照说明被服用这个药才能非常有效。这里用了状语从句的省略，完整的是only when the medicine is taken according to the directions can…，当主从句的主语一致的时候，可以省略从句的主语和be动词，所以选B。

练习册系列答案

A．comes a car；had told

B．comes a car；told

C．does a car come；had told

D．a car comes；told

Interest is as vital to learning as the ability to understand, even ________ so.

--- How is the man injured in the accident?
---- The doctor said if ________ in a proper way, he was likely to be saved.

Be careful when you cross this busy street. _____, you may get run over by a car.

The giant panda is an animal unique to China, and Wolong in Sichuan Province is one of the few places in China where ______.
A. the giant panda live B. lives the giant panda
C. does the giant live C. the giant panda is living

When _______, the new school will be open in the year 2015.

____, he doesn’t study well.

Not only ______ strict with us, but also ______ for us .

A．was the teacher ; did he care	B．was the teacher ; he cared
C．the teacher was ; did he care	D．the teacher was ; did he care

试题分类