More consumers are waiting for the further drop of housing prices with money in their hands rather than _________ houses, according to a report．

A．to buy

B．buying

C．buy

D．bought

Nobody believed his reason for being absent from the class _________ he had to meet his uncle at the airport．

A．why

B．that

C．where

D．because

Shall we go _________ downtown to buy some clothes of high quality?

A．to

B．the

C．不填

D．to a

_________ we are alone, we can speak freely．

A．Now that

B．Though

C．Even if

D．As if

The chairman thought _________ necessary to invite Professor Smith to speak at the meeting．

A．that

B．it

C．this

D．him

It is not expected _________ he said caused so much discussion at the meeting．

A．that

B．what that

C．what

D．that what

He is always ready to help others．That's one of his _________．

A．strengths

B．powers

C．abilities

D．benefits

Please remind me in case I _________ forget．

A．could

B．would

C．should

D．will

The bridge _________ in the 1800's was the oldest building in this village．

A．to be completed

B．having been completed

C．completed

D．being completed

It was playing computer games that cost the boy plenty of time that he _________ spent doing his lessons．

A．might have

B．should

C．ought to have

D．could