Some researchers believe that there is no doubt _______ a cure for AIDS will be found.
A．which B．that C．what D．whether
To write his paper, he tried hard to collect _______ information as he could.
A．many of B．a great many C．the number of D．a large amount of
Don’t worry. You ________ have that book tomorrow.
A．must B．could C．shall D．may
Nearly all educators believe that a challenging situation can often _______ the best qualities of a person.
A．bring out B．bring forward C．bring about D．bring up
He found his son _______ inside the lift, _______ very worried.
A．trapping; felt B．trapped; felt C．trapped; feeling D．trapping; feeling
Great changes have taken place in that school. It is no longer _______ it was 20 years ago, _______ it was so poorly equipped.
A．that; which B．what; when C．what; which D．which; that
