The windows are dirty．They need ______．

[　　]

A．to clean　　　B．being cleaned

C．cleaning　　　D．to be cleaning

I really want to know ______ the naughty boy．

[　　]

A．how to do with　　　 　B．to deal with

C．what to deal with　　　D．what to do with

Because he is very strong, he will ______ his health soon．

[　　]

A．recover　　　　　 B．recover from

C．be recovered　　　D．recovery

I can’t have you ______ with each other all day long．

[　　]

A．quarrel　　　 　B．quarreling

C．to quarrel　　　D．quarreled

Don't ______ your mother again．She is always ______ your safety．

[　　]

A．worry about…worrying about

B．worry about…worrying

C．worry…worrying about

D．worry…worried

October 1,1949 is the day ______ I'll never forget．

[　　]

A．when　　　B．which　　　C．on which　　　D．at which

______ at the back the student can't see the words on the blackboard well．

[　　]

A．Sit　　　B．Seat　　　C．Seating　　　D．Seated

The houses ______ used to ______ to Tom’s grandfather．

[　　]

A．pulled down…belonging

B．having pulled down…belonging

C．having been pulled down…belong

D．pulled down…belong

I am considering ______ my son a second foreign language．

[　　]

A．teaching　　　B．teach

C．to teach　　　D．to teaching

He bought a lot of apples, ______ are not ______．

[　　]

A．some of which…satisfied

B．some of them…satisfied

C．some of which…satisfactory

D．some of them…satisfactory