21.It is estimated that _________ earthquake in Haiti has damaged 10,000 buildings, many of which are beyond ________ repair.
A.the, / B.an, a C.an, the D.the, the
22._______ the rain falling so hard, it becomes more and more difficult to carry on the rescue work.
A.Since B.As C.With D.For
23.Tom's bad performance at school ________ his mother many sleepless nights.
A.cost B.made C.cause D.bring
24.---May I borrow your dictionary?
---How terrible! I ________ to take it with me.
A.forget B.forgot C.was forgetting D.had forgotten
25.At times, worrying is a normal _______ to a difficult event or situation—a loved one being _________ in an accident, for example.
A.response; injured B.reaction; wounded C.reply; hurt D.reflection; died
26.---We ________ to have you here tonight.
---Thank you and it is _______ for me to be invited.
A.feel an honour; honourable B.honour; an honour
C.are honoured;honourable D.are honoured; an honour
