问题
Did you know ______ just now—Their plane didn’t take off on time because of the thick fog.
A:what did they happen
B:what happened to them
C:what they happened
D:what they have happened;
B:what happened to them
C:what they happened
D:what they have happened;
正确答案是：
同类题型
ng on a frozen sports field soundslike a lot of fun Isn’t it rather risky, __9
The great changes _______ have taken place _______ carrying out the economic reform in our country.
1A: When did it begin tosnowB: It started______ the night.
llyspeaking, according to thedirections, the drug has no side effect