_______(49)
A.thankful
B.helpful
C.doubtful
D.grateful

_______(51)
A.instant
B.ancient
C.modern
D.classical

_______(53)
A.special
B.specified
C.specific
D.specialized

_______(54)
A.Therefore
B.Then
C.However
D.Together

Feeling tired after a long day of hard work, __________.
A.the housework was of no interest to me.
B.my mother helped me with the housework.
C.I asked my mother to help me with the housework.
D.the housework was too much for me.

A: "Could you tell me how to get to the nearest post office?” B: “__________”
A.Sorry for this convenient
B.I have no clue.
C.Not at all.
D.Sorry, I’m a new comer here.

The boy always does his homework before class __________ be the teacher.
A.so that not to be punished.
B.so as not to be punished
C.so as to be punished
D.in order that not to be punished

Under no circumstances __________ phone the police.
A.you should
B.shouldn’t you
C.should you
D.you shouldn’t

The children said that they __________ the game for about an hour __________.
A.had just started/ago
B.had just started/ before
C.just started/ before
D.just started/ ago

Our country has large areas of __________ beauty.
A.unhurt
B.undamaged
C.unharmed
D.unspoilt