1 . The boy and the dog ________ are in the picture look very lovely. (用适当的词填空)

2 . When deeply ________ (absorb) in work, as he often was, he would forget all about eating or sleeping. （所给词的适当形式填空）

3 . The old town________ (date) back to the late seventeenth century. (所给词的适当形式填空)

4 . Up to now, medical technology _________(advance) greatly throughout the world. （所给词的适当形式填空）

5 . The book discusses the extent ________which family life has changed over the past 50 years. （用适当的词填空）

6 . I was driving down to London_______________ I suddenly found that I was on the wrong road. (用适当的词填空)

7 . Mr. Smith owned this oil painting until the early 1990s, ________ he gave it to his grandson.

A．which

B．when

C．that

D．on which

8 . Strange ________ it might sound, his idea was accepted by all the people at the meeting. （用适当的词填空）

9 . If ________(take) according to the instructions, the new medicine has almost no side effects. （所给词的适当形式填空）

10 . It was not until I came here______I realized this place was famous for not only its beauty but also its weather. （用适当的词填空）