英语句子选择1._____is well_know,China is rich in na.A.Which B.As C

英语句子选择
1._____is well_know,China is rich in na.
A.Which B.As C.It D.That
2.1)I will never forget the days_____ we studied together.
2)I will never forget the days_____ we spent together.
3.it was 1969______two Americans got to the moon by spaceship.
Awhich Bwhen Cthat Das
3.It was 1969____two Americans got to the moon.
A.that B .on when C.when D.on which
如果是.it was in 1969______two Americans got to the moon by spaceship
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