The husband rushed to the hospital ____ he heard that his wife was injured.
It has been many years since I was last in London, _______ I still remember something that happened during that visit.
It was ____ late to catch a bus after the party; therefore we called a taxi.
It is said that some teachers will go to Japan. They are ___ going to work as exchange teachers of Chinese.
The rock is _____ two hundred kilograms, and almost no one can move it.
These books are ___ written for those who learn how to use computer. It's an ABC of computer learning.