掌握一门外语很难,但值得付出努力。It is difficult to master a foreign language, but it pays to .
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() is your English teacher?
A. Whose
B. Who's
C. Who
D. Whom
( ) book do you like?
A. Which
B. Those
C. Whom
D. There
( ) is my picture.( ) are yours.
A. This, That
B. This , Those
C. That,this
D. These ,Those
Which of ( ) books is yours?
A. this
B. these
C. that
D. any