—David, are you listening to me?
—Sorry, Dad. I ________ to make sense of what the reporter said.
| A．was trying | B．have tried |
| C．am trying | D．tried |
Personally, it is no good ________ online all day long. It is really a waste of time.
| A．to chat | B．chats | C．chatting | D．chatted |
Living on his own and only having a dog _____ company, the old man feels ______.
| A．in; alone | B．for; lonely | C．as: alone | D．as; lonely |
______ you make a promise, you should keep it.
| A．The moment | B．While | C．Once | D．As if |
My parents insisted that I _____ medicine instead of law.
| A．must study | B．will study | C．had better | D．study |
________ was it that made the singer ______ his Asia Tour Concerts.
| A．What; put off | B．Why; put up | C．How; put away | D．Where ; put on |