he was born and brought up inAustralia, he can speak ______ Chinese

Infrastructure Investment Bank , its headquarter______ in Beijing, is an inter-governmental agency which is intended for multi-development of Infrastructure in Asia.

We can see no clouds in the sky. Therefore, there’s no doubt ______ it will be fine tomorrow.[ ]

It suddenly occurred to him ________ he had left his keys in the office.(2012·江西)

China has developed rapidly since1978.