1 . William Hastie once suggested that history informs us of past mistakes ________ we can learn without repeating them.

A．from which

B．in which

C．with whom

D．for whom

2 . The number of people invited________ fifty, but a number of them________ absent for different reasons.

A．were; was

B．was; was

C．was; were

D．were; were

3 . My washing machine ___________this week, so I have to wash my clothes by hand.

A．was repaired	B．is repaired
C．is being repaired	D．has been repaired

4 . 【2018·北京】_________ along the old Silk Road is an interesting and rewarding experience

A．Travel	B．Traveling
C．Having traveled	D．Traveled

6 . It is obvious to the students ______ they should get well prepared for their future.

A．as

B．which

C．whether

D．that

7 . The reason _______ he was late was _______ he was ill.

A．Why, which

B．why, why

C．why , what

D．why , that

9 . ________ you’ ve got a chance, you might as well make full use of it.

A．After

B．Now that

C．Although

D．As soon as

10 . Written Chinese has also become an important means          China’s present is connected with its past.

A．for which

B．on which

C．by which

D．on that