A、 over
B、 on
C、 at
D、 to
答案:D
A、 over
B、 on
C、 at
D、 to
答案:D
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
A. came off
B. came up
C. put on
D. went on
A. install
B. to install
C. to be installed
D. installed
A. there being a chance
B. there to be a chance
C. there be a chance
D. being a chance
A. constructed
B. instituted
C. confirmed
D. given up
A. able to
B. capable to
C. able of
D. capable of