We could not reason out the way the robbers escaped，because we were unable to find any ________ of them.

A．chance　B．trace

C．point　D．signal

The waiting lists for a bed in a public elderly care home in Beijing have grown ________ long that some are saying it could take 100 years to get a position.

A．very　B．too

C．quite　D．so

Don't spend time beating on a wall, ________ to change it into a door.

A．hope　B．hoping

C．hoped　D．to hope

A nursing home in Tianjin has opened offering ________ the owners are describing as facilities as good as a five?star hotel.

A．which　B．how

C．what　D．that

French Foreign Minister Laurent Fabius on Monday ________ international support for his operation to help Mali quash Islamist rebels.

A．called up　B．called for

C．called out　D．called in

China added 50.9 million Internet users in 2012，________ the total to 564 million at the end of last year.

A．brought　B．bringing

C．having brought　D．to bring

Only when I put myself in their position ________ they were more miserable than me.

A．I had known　B．had I known

C．I knew　D．did I know

The urge to go abroad for further study is strong, but it was not until last summer ________ I knew how powerful it could be.

A．who　B．that

C．where　D．before

For Wang Shun，________ university graduate from China's less developed Guizhou Province，shopping online is ________ delight as she tries to keep pace with the lives of those in big cities.

A．the；a　B．a；不填

C．an；a　D．a；a

If we ________ one of the other uploading approaches, the process would have taken longer than one hour.

A．used　B．had used

C．should use　D．would use