Have you heard that the research he spent most of his time_______ perfect success?
| A．on was a | B．to be |
| C．being a | D．on being |
相关试题
—Did you your pen friend yesterday?
—Yes. He told me he would to on a visit to America.
A. hear about B. hear from C. hear of
He did his best to make them what he meant, but it didn’t help.
A. understood B. understand C. to understand
—I’m going to spend my summer holidays in Hawaii.
—How lucky! And don’t forget to send me a postcard.
A. That sounds good. B. Have a nice trip! C. Good luck.
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