At present, he is ____ holiday.
A、in
B、at
C、on
D、by
第1题:
Nancy is always keen () sports channels.
A、in
B、at
C、on
D、for
第2题:
A. in
B. at
C. on
D. for
第3题:
A. in
B. at
C. on
D. /
第4题:
A、in
B、at
C、on
D、with
第5题:
They overcame their difficulty _________ working hard.
A、in
B、at
C、on
D、by