______ she began reading and saw what fun it was, there was no stopping her.
| A．Unless | B．Once | C．Until | D．Though |
When he came back from abroad, Joan told us about the cities and the people ______ he had visited.
| A．that | B．who | C．where | D．which |
The Science Museum, ______ we visited during a recent trip to Britain, is one of London’s tourist attractions.
| A．which | B．what | C．that | D．where |
Peter was so excited ______ he received an invitation from his friend to attend the wedding.
| A．where | B．that | C．why | D．when |
When you read a book, you should make a mark ______ you have any question.
| A．where | B．which | C．that | D．what |
Reading is an experience quite different from watching TV; there are pictures ______ in your mind instead of before your eyes.
| A．to form | B．form | C．having formed | D．forming |