The National Day Parade for the 60th anniversary of the founding of China was so grand that it certainly didn’t       the whole nation.

         A．bread down        B．calm down          C．let down    D．set down

Put yourself in situations where you will be forced to communicate in English,       you will see more progress over time.

         A．or           B．so           C．yet          D．and

---I can’t find that pen you’ve just given me.

    ---Don’t worry, here’s        .

         A．it              B．more            C．another         D．others

Many scientists believe that global warming, if       , will cause extreme climate changes this century.

         A．not stopping         B．no stop             C．not stopped         D．without stop

The woman rushed out        she felt the house shaking.

         A．until       B．immediately           C．unless           D．before

Never in my dreams       Zhao Benshan’s performance during the CCTV Spring Festival Gala was considered the best.

         A．I could imagine           B．could I imagine             C．I couldn’t imagine        D．couldn’t I imagine

Over the past decades, sea ice is decreasing in the Arctic       global warming.

         A．as a result of      B．on top of    C．in front of  D．in need of

The teacher        that his students had difficulty in English grammar, decided to give them more examples.

         A．knows         B．to know    C．knowing     D．being known

        serious the economic situation is, they still have confidence in overcoming all the difficulties.

         A．Whatever  B．Although    C．Even though       D．However

The ground has been cleared and houses       for those homeless people now.

         A．build  B．have built  C．are built     D．are being built