________such a heavy loss，the businessman didn’t have the courage to go on.
A．Having suffered B．Suffering
C．To suffer D．Suffered
I’ve worked with children before，so I knew what ________ in my new job.
A．expected B．to expect
C．to be expected D．expects
Generally speaking，prices of daily goods ________ through the Internet are lower than store prices.
A．to buy B．are bought
C．buying D．bought
The country has already sent up three unmanned spacecraft，the most recent ________ at the end of last March.
A．has been launched B．having been launched
C．being launched D．to be launched
________tomorrow’s lessons，I have no time to play with you.
A．Not preparing B．Not prepared
C．Not having prepared D．Having not prepared
—I would like to buy an expensive camera.
—Well.We have several models________.
A．to choose from B．of choice
C．to be chosen D．for choosing
