—Nathan likes his job because he ______enjoy the beauty of nature.
A. can B. must C. should D. is supposed to
This food is free. You don't have to _________ it.
A. look for B. pay for
C. ask for D. wait for
（题文）—You’ve given us a wonderful Chinese dinner，Mrs Wang．
—________．
A. I’m glad you enjoyed it
B. Oh，I’m afraid I didn’t cook very well
C. Come again when you are free
D. It’s not necessary for you to say so
—You must________the bottle before you take the medicine．
—OK，I will．
A. break
B. shake
C. cover
D. throw
—I hear you are in my town．________any time you like．
—I’ll if I have time．
A. Drop by
B. Come out
C. Show up
D. Run off
—I haven’t worked the problem out yet．What am I supposed to do?
—Try again!It’s only________difficult．
A. a lot
B. a bit
C. too much
D. too many
