4道英语提问1.how long do you think it will be ____China spends a

4道英语提问
1.how long do you think it will be ____China spends a manned spaceship to the moon?
A.when B.until C.that D.before
2.the moment the 28th Olympic Games ___open ,the whole world cheered.
A.declared B.have been declared C.have declared D.were declared
3.how can you expect to learn anything ____you never listen
A.in case B.even if C.unless D.when
4.in peace,too,the Red Cross is expected to send help___there is human suffering .
A.whoever B.whatever C.wherever