There is _____ evidence that cars have a harmful effect on the environment.
A．abandoned B．adequate C．absent D．absurd
Only when he was refused by the interviewer ____ the importance of knowing English.
A．was he fully aware of B．he was fully aware of
C．was fully he aware of D．he fully was aware of
— What should I do with this passage?
—________ the main idea of each paragraph.
A．Finding out B．Found out C．Find out D．To find out
He tried to get someone to _______ the old worker but could find none.
A in place of B instead of C take the place of D take place
It was ______ back home after the experiment.
A． not until midnight did he go B． until midnight that he didn’t go
C． not until midnight that he went D． until midnight when he didn’t go
Several weeks had gone by____I realized the painting was missing.
A．as B．before C．since D．when
