问题

The accident happened ______ a freezing winter morning.
A:on
B:in
C:at
D:since;
B:in
C:at
D:since;
正确答案是:
同类题型
The poor child was ______ by his grandmother after his parents died.
I’d like to know _____ Chinese.
If you want to buy this dress, you’d better ____ first to make sure it fits you.
Mum went on ________ the housework after she helped me with my homework.
The beautiful girl ________a hair dresser for a year is a manager now