问题

_____did the space flight last? —Twenty-one hours.[ ]
A:How many
B: How long
C: How soon
D: How often
B: How long
C: How soon
D: How often
正确答案是:
同类题型
Whether we’ll hold the sports meet depends on the weather, _____?
Huck, how old is your mother this year? —. And we had a party for her birthday last weekend.
The boy is old enough to ———himself.
I am gaining weight. I need to see a doctor.— But I think you eat too much. ___________.
Your father looks tired! — Yes, he worked for _________ after twelve o’clock.