问题

Nobody knows ______ yesterday.
A:how the accident happens
B:how does the accident happen
C:how the accident happened
D:how did the accident happen;
B:how does the accident happen
C:how the accident happened
D:how did the accident happen;
正确答案是:
同类题型
22.—Have you heard today’s weather forecast?—YesBetter weather is____We can expect an outing
Fortunately it was near the place ____ there was a bomb ____ we found the soldier alive
The boy with his family lives in a town ________ here.
A quarrel _________, which made him ______ his family.
as he is, Sunyang must have gained ________ richexperience in ________ society as well as sports.