The question ________ you should take this medicine should be decided by your family doctor.
| A．why | B．what |
| C．whether | D．that |
________ you are unable to deal with it, perhaps we should ask someone else for help.
| A．Although | B．While |
| C．Since | D．Unless |
You seem to have a readymade answer ________ I ask you a question.
| A．whenever | B．whatever |
| C．whichever | D．whoever |
—What has made John look like lacking sleep?
—________ he had to prepare for the coming exam and stayed up last night.
| A．For | B．Because |
| C．That | D．What |
Everyone is different and that is ________ makes our world much better.
| A．that | B．which |
| C．who | D．what |
The most impressive sites of Chishui Danxia are its various waterfalls, ________ the Shizhang Waterfall is the largest one.
| A．for which | B．in which |
| C．from which | D．of which |