For a moment nothing happened．Then ________ all shouting together．

A．voices had come

B．came voices

C．voices would come

D．did voices come

I can't figure out ________ it is that makes him so difficult at school．

A．how

B．what

C．why

D．which

Human facial expressions differ from those of animals in the degree ________ they can be controlled on purpose．

A．with which

B．to which

C．of which

D．for which

A flashing red light ________ that a stretch of road was under repair．

A．indicated

B．suggested

C．symbolized

D．represented

Matthew ________ to an important position, but he gave it up for some reason．

A．must be promoted

B．would be promoted

C．should have been promoted

D．could have been promoted

If you have ________ to something such as information, you have the opportunity or right to see it or use it．

A．access

B．witness

C．track

D．attention

You are still working on the essay!It's 2∶30 p.m.already and you're supposed ________ it by noon．

A．to finish

B．finishing

C．to have finished

D．having finished

While in university, we were offered a number of after-school activities to ________ our social skills．

A．create

B．grow

C．develop

D．settle

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