________ I can't understand is ________ he wants to change his mind．

A．that; that

B．what; why

C．which; what

D．what; 不填

All through history, big changes have taken place in ________ English language, especially when Henry IV became ________ King of England．

A．the; the

B．不填; the

C．the; 不填

D．an; 不填

He was so sad hearing the bad news that he couldn't ________ his tears．

A．hold on

B．hold up

C．hold back

D．hold out

Which book is much better________ quality?

A．In need of

B．in case of

C．in terms of

D．in favor of

He is ready to help others, seldom, ________ refusing them when they turn to him．

A．if never

B．if ever

C．if not

D．if any

Look out! Don't get too close to the house________ roof is under repair．

A．whose

B．which

C．of which

D．that

Schools in the east tend to be better equipped, ________ those in the west are relatively poor．

A．As

B．While

C．When

D．But

The teacher and writer, as well as many guests ________ invited to the party held yesterday．

A．is

B．were

C．are

D．was

His jewelry shop is said ________ and he can't help but________ the fact．

A．robbing; to accept

B．to rob; accepts

C．to have robbed; accept

D．to have been robbed; accept

The reason ________ he explained to us was ________he overslept．

A．why; that

B．why; because

C．that; because

D．which; that