U.S. President Barack Obama arrived in China’s economic center Shanghai on Sunday night, November 15th 2009, ______a state visit to China.
This cake is very sweet. You ______ a lot of sugar in it.
To keep slim, many young girls prefer going on a ______.
—What do you think of the story? —Wonderful! It ______ my childhood.
______ life began on earth is one of the biggest puzzles that scientist found hard ______.
President Obama held talks with Chinese President Hu Jintao in Beijing, ________ economic recovery, climate change and stopping the spread of nuclear weapons.