A、 it is scarce
B、 so scarce is it
C、 scarcity of it
D、 its scarcity
答案:D
A、 it is scarce
B、 so scarce is it
C、 scarcity of it
D、 its scarcity
答案:D
A. whether
B. if
C. that
D. what
A. On
B. in
C. at
D. within
A. upon
B. over
C. above
D. below
A. against
B. for
C. upon
D. to
A. over
B. on
C. at
D. to
A. to
B. at
C. on
D. of
A. about
B. to
C. on
D. for
A. on vacation
B. on hand
C. on duty
D. on guard
A. ordering
B. tidying up
C. arranging
D. clearing away
A. go in for
B. hold on to
C. put up with
D. keep pace with