—I really don’t know how to thank you enough .
— .
| A．No problem | B．Think nothing of it |
| C．Not at all | D．It doesn’t matter |
The plane of the Polish president was about to land ______ it snagged(挂) treetops and crashed, ______ the president and 96 others on board.
| A．while, killed | B．when, killing |
| C．and, and killed | D．when, to kill |
Mum ______ to us. “Be quiet! Your little sister is sleeping.”
| A．shouted | B．explained | C．whispered | D．replied |
Einstein’s theory, which was doubted by most scientists at first___out to be correct in the end.
| A．proved | B．was proved | C．turned | D．tested |
—Thank you for offering me so much advice on English learning, Tom.
—_______ .
| A．With pleasure | B．It’s all right |
| C．It’s my pleasure | D．It’s nice to say so |
He thinks so highly of the movie Avatar that he thinks it is worth
seeing ______ second time.
| A．the | B．a | C．the other | D．other |