I still remember ______ to the Science Museum for the first time when I was young.
A．to take B．having taken C．taking D．being taken
As a result of the fog haze weather, nowadays many people are longing to live ______ the air is fresher.
A．that B．when C．where D．in which
—I thought you ______ for vacation tomorrow.
—I had planned to, but I have a very important meeting to attend tomorrow.
A．will leave B．are leaving C．have left D．were leaving
As President Xi Jinping put it in Moscow on Saturday, China’s development creates more ______ than threats.
A．changes B．chances C．positions D．shares
More than 800,000 Chinese overseas students have returned in the last five years, with the annual number ______ by an average rate of 36 percent each year.
A．growing B．grown C．to grown D．having been grown
For most informal dinners, you should wear comfortable and ______ clothes.
A．official B．formal C．casual D．proper
