You have no idea how she finished the relay race _ _ her foot wounded so much．
| A．for | B．when  |
C．with | D．while |
He failed the driving test though he __________for a long time.
| A．practises | B．has practised |
| C．was practising | D．had been practising |
Hotels fill up fast during the busy tourist season, __________it is necessary for tourists to make reservations in advance.
| A．or | B．so | C．for | D．but |
An advantage of being the youngest child in his family is __________he gets a lot of attention.
| A．that | B．whether | C．why | D．when |
His study was a mess with lots of books and magazines __________up everywhere.
| A．to pile | B．having piled |
| C．piled | D．to be piled |
--Oh, I __________my passport!
--Don’t worry. We have time to go back home and get it.
| A．forget | B．forgot |
| C．will forget | D．had forgot |